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A2 noun #1,500 most common 6 min read

전기

jeongi Top 1,500

At the A1 level, '전기' (electricity) is introduced as a basic noun associated with daily life and household items. Students learn that electricity is what makes lights work and computers run. The focus is on very simple sentences like '전기가 있어요' (There is electricity) or '전기가 없어요' (There is no electricity). Learners at this stage should recognize the word in the context of '전기 밥솥' (electric rice cooker), a staple in Korean homes. The goal is to identify the word and understand its vital role in the home environment without worrying about complex technical verbs or industrial applications. It is often taught alongside other basic utilities like '물' (water) and '가스' (gas).

At the A2 level, learners begin to use '전기' in more functional contexts. This includes learning common verbs like '아끼다' (to save) and '사용하다' (to use). An A2 student should be able to say '전기를 아껴야 해요' (We must save electricity) or ask '전기 요금이 얼마예요?' (How much is the electricity bill?). This level introduces the idea of electricity as a resource that is consumed and paid for. Learners also start to encounter compound words like '전기차' (electric car) and '전기장판' (electric mat), reflecting a growing awareness of how '전기' modifies other nouns to describe modern conveniences. Simple explanations of power outages (정전) are also introduced here.

At the B1 level, the use of '전기' expands into social and environmental topics. Learners can discuss the importance of electricity in modern society and express opinions on energy conservation. They start using more specific terms like '전력' (electric power) and '에너지' (energy) interchangeably in casual conversation. A B1 learner can describe a situation where the power went out and how it affected their day: '갑자기 전기가 나가서 숙제를 못 했어요' (The power suddenly went out, so I couldn't do my homework). They also begin to understand the nuances of '전기가 통하다' (to conduct electricity) in both literal and occasionally metaphorical senses, though the latter is more advanced.

At the B2 level, '전기' is used in more technical and formal discussions. Learners can understand news reports about '전기 요금 인상' (electricity rate increases) and the reasons behind them, such as global fuel prices. They can use the word in the context of sustainability, discussing '신재생 에너지' (renewable energy) and '전기 생산' (electricity production). At this stage, the distinction between '전기' (the phenomenon), '전력' (the power/load), and '전압' (the voltage) becomes clearer. B2 learners can also handle more complex grammar structures involving '전기', such as '전기를 절약함으로써 환경을 보호할 수 있다' (We can protect the environment by saving electricity).

At the C1 level, '전기' is used fluently in academic and professional settings. The learner can discuss the history of electrification in Korea and its impact on the nation's economic development (the 'Miracle on the Han River'). They are comfortable with idiomatic or highly technical uses, such as '전기가 오르다' (to get an electric shock) or discussing '전기 전도성' (electrical conductivity) in a scientific context. C1 learners can analyze the socio-political implications of electricity policy, such as the debate over nuclear vs. solar power. They also recognize the homonyms of '전기' (biography, former period) instantly without needing context clues, and can use them with precision.

At the C2 level, '전기' is a tool for nuanced expression. The learner can appreciate the word's use in literature or high-level journalism, where it might be used metaphorically to describe a 'spark' of inspiration or a sudden realization (though '전율' or '불꽃' are more common, '전기' can appear in technical metaphors). They have a deep understanding of the Hanja (電氣) and can relate it to other words in the same family (전자, 전파, 전지). A C2 speaker can engage in high-level policy debates regarding the national power grid's stability or the ethics of energy distribution, using '전기' as a foundational concept in a complex web of economic and scientific terminology.

Practice it Examples Notes & Tips

전기 in 30 Seconds

전기 (Electricity) is the essential energy that powers modern life, from lights to smartphones.
Commonly used with verbs like '나가다' (go out), '들어오다' (come in), and '아끼다' (save).
It often appears as a prefix in household items like '전기밥솥' (rice cooker) or '전기차' (electric car).
Watch out for homonyms meaning 'biography' or 'former period' depending on the Hanja context.

The word 전기 (Jeon-gi) is a cornerstone of modern Korean vocabulary, representing the fundamental physical phenomenon of electricity. At its core, it refers to the energy resulting from the existence of charged particles, such as electrons or protons, either statically as an accumulation of charge or dynamically as a current. In the context of daily life in South Korea, a country known for its rapid technological advancement and high-tech infrastructure, '전기' is synonymous with the lifeblood of society. It powers the glowing neon signs of Gangnam, the high-speed KTX trains, and the ubiquitous smartphones that every citizen carries. Historically, the introduction of electricity to Korea dates back to the late 19th century, specifically 1887, when the first electric lights were installed in Gyeongbokgung Palace. This marked a pivotal shift from traditional oil lamps to modern illumination, a transition that '전기' captures perfectly. Today, when a Korean person says '전기가 나갔다' (The electricity went out), it signifies a significant disruption to the highly digitalized Korean lifestyle.

Scientific Context: In a scientific sense, 전기 refers to the flow of electric charge. It is the basis for electronics (전자), power (전력), and magnetism (자기). In Korean education, students learn about '전기 회로' (electric circuits) and '전류' (electric current) early on, establishing the word as a technical foundation.

요즘은 전기 자동차가 점점 많아지고 있어요. (These days, electric cars are becoming more common.)

Economic Context: Electricity in Korea is managed largely by KEPCO (Korea Electric Power Corporation). The term '전기 요금' (electricity bill) is a frequent topic of discussion, especially during the humid summer months when air conditioning usage peaks, leading to concerns about '누진세' (progressive tax/rates).

폭풍 때문에 전기가 끊겼습니다. (The electricity was cut off because of the storm.)

Cultural Nuance: The concept of 'saving electricity' (절전) is deeply ingrained in Korean public service campaigns. You will often see signs in subways or public buildings encouraging people to turn off lights, reflecting a collective responsibility toward energy consumption.

Using 전기 correctly involves understanding its common collocations and the specific verbs that describe its state. In Korean, electricity doesn't just 'work'; it 'enters' (들어오다), 'goes out' (나가다), or is 'cut off' (끊기다). When you turn on a light, you are technically allowing the '전기' to flow, but more commonly, you use the verb '켜다' (to turn on) for the appliance itself. However, to discuss the power supply, '전기가 들어오다' is the standard expression. For example, after a blackout, you might say '이제 전기가 들어와요' (The power is back on now). Conversely, '전기가 나가다' is the most natural way to say the power went out. If you are discussing the act of saving energy, the verb '아끼다' (to save/cherish) or '절약하다' (to economize) is used: '전기를 아껴 씁시다' (Let's use electricity sparingly).

Common Verb Pairings: 1. 전기를 쓰다/사용하다 (To use electricity)
2. 전기를 생산하다 (To produce electricity)
3. 전기가 통하다 (To conduct electricity / To have a current running through)
4. 전기를 차단하다 (To cut off/block electricity)

이 기계는 전기 소모가 많아요. (This machine consumes a lot of electricity.)

Compound Nouns: 전기 often acts as a prefix for various appliances: 전기밥솥 (electric rice cooker), 전기장판 (electric heating mat), 전기차 (electric car), 전기레인지 (electric range/stove). Understanding this pattern allows you to expand your vocabulary exponentially.

안전하게 전기를 사용하는 것이 중요합니다. (It is important to use electricity safely.)

You will encounter the word 전기 in a multitude of settings, ranging from mundane household chores to high-level political debates. In a domestic setting, the most common place is the '전기 요금 고지서' (electricity bill) which arrives monthly. Parents often tell their children, '전기 꺼라!' (Turn off the electricity/light!) to save money. In public spaces, you might hear announcements during maintenance: '전기 점검으로 인해 정전이 있을 예정입니다' (There will be a power outage due to electrical inspection). On the news, '전기' is a frequent topic regarding environmental policy, such as '전기차 보조금' (electric vehicle subsidies) or '전기료 인상' (electricity rate hikes). If you visit an electronics store like Himart or Samsung Plaza, the staff will discuss '전기 효율' (electrical efficiency) or '에너지 소비 효율 등급' (energy consumption efficiency grade) of various appliances.

Daily Life Examples: - At home: '전기 밥솥 어디 있어?' (Where is the electric rice cooker?)
- In the office: '전기 콘센트가 부족해요.' (There aren't enough electrical outlets.)
- In the street: '전기차 충전소' (Electric vehicle charging station).

오늘 전기 점검이 있다고 합니다. (I heard there is an electrical inspection today.)

The most frequent mistake learners make with 전기 is failing to distinguish it from its homonyms. In Korean, '전기' can mean 'electricity' (電氣), 'biography' (傳記), or 'the former period' (前期). While context usually clarifies the meaning, a beginner might be confused when reading a book title like '세종대왕 전기'—this is not 'King Sejong's Electricity' but 'The Biography of King Sejong'. Another common error is using the wrong verb for 'power outage'. While '전기가 죽다' (electricity died) might make sense in some languages, in Korean, we use '전기가 나가다' (electricity went out) or '정전되다' (to have a blackout). Additionally, learners often confuse '전기' (electricity as a form of energy) with '전자' (electronics/electrons) or '전력' (electric power/wattage). While related, they are not interchangeable. For instance, you pay a '전기 요금', not an '전자 요금'.

Homonym Comparison: 1. 전기 (Electricity): 전기를 아끼다.
2. 전기 (Biography): 위인전을 읽다 (Reading a biography of a great person).
3. 전기 (Former Period): 학기 전기 (The first half/former part of the semester).

'전기가 끊기다'와 '정전'은 비슷한 의미입니다. ('Electricity being cut' and 'blackout' have similar meanings.)

Understanding words related to 전기 helps in achieving a more natural command of the language. While '전기' is the general term for electricity, other terms specify the form or function of that energy. 전력 (Jeon-ryeok) refers specifically to electric power or wattage, often used in industrial or technical contexts (e.g., 전력 소모 - power consumption). 에너지 (E-neo-ji) is the broader loanword for energy, encompassing electricity, heat, and kinetic energy. 전류 (Jeon-ryu) refers to the electric current itself, the flow of charge. In a household context, you might hear 코드 (Code) or 플러그 (Plug), which are the physical components used to access electricity. Another important related term is 전자 (Jeon-ja), meaning 'electronic', used in '전자 제품' (electronic products).

Comparison Table: - 전기: General electricity.
- 전력: Electric power (measurable capacity).
- 전류: Electric current (the flow).
- 전압: Voltage (the pressure).

전력 수요가 급증하고 있습니다. (The demand for electric power is surging.)

How Formal Is It?

Formal

Informal

Difficulty Rating

Grammar to Know

Examples by Level

집에 전기가 들어와요.

Electricity is coming into the house.

Subject particle -가 is used with 전기.

전기가 없으면 불편해요.

It's uncomfortable if there's no electricity.

-으면 indicates a condition (if).

전기 밥솥을 사요.

I buy an electric rice cooker.

전기 acts as a modifier for 밥솥.

이것은 전기예요.

This is electricity.

Polite ending -예요.

전기가 밝아요.

The electricity (light) is bright.

Adjective 밝다 (to be bright).

전기를 꺼 주세요.

Please turn off the electricity (light).

-아/어 주세요 for a polite request.

전기가 필요해요.

I need electricity.

필요하다 (to need) takes the subject particle -가.

전기가 무서워요.

I am afraid of electricity.

무섭다 (to be scary/afraid).

전기를 아껴 써야 합니다.

We must use electricity sparingly.

-아야/어야 하다 (must/should).

어제 우리 동네 전기가 나갔어요.

The electricity went out in our neighborhood yesterday.

나갔어요 is the past tense of 나가다 (to go out).

전기 요금이 너무 비싸요.

The electricity bill is too expensive.

요금 (fee/bill) combined with 전기.

전기 자동차는 조용해요.

Electric cars are quiet.

조용하다 (to be quiet).

전기장판을 켜고 자요.

I sleep with the electric mat on.

-고 (and/while) connecting two actions.

전기를 많이 사용하지 마세요.

Don't use a lot of electricity.

-지 마세요 (Don't...).

전기 코드를 꽂으세요.

Plug in the electric cord.

꽂다 (to plug in/insert).

전기가 다시 들어왔어요.

The electricity came back on.

다시 (again) + 들어오다 (to come in).

전기 에너지를 효율적으로 관리해야 해요.

We need to manage electric energy efficiently.

Adverbial form -게 (efficiently).

여름에는 전기 사용량이 급증합니다.

Electricity usage surges in the summer.

사용량 (usage amount) + 급증하다 (to surge).

전기가 통하는 물질을 찾아보세요.

Try to find substances that conduct electricity.

Noun modifying form -는 (that conducts).

갑작스러운 정전으로 전기가 끊겼어요.

The electricity was cut off due to a sudden blackout.

끊기다 (to be cut off - passive).

전기 제품을 고치러 서비스 센터에 갔어요.

I went to the service center to fix an electric appliance.

-(으)러 가다 (to go in order to...).

전기세가 지난달보다 더 많이 나왔네요.

The electricity tax/bill came out more than last month.

-보다 (than) for comparison.

이 건물은 전기로 난방을 합니다.

This building is heated by electricity.

Instrumental particle -로 (by means of).

전기 안전 수칙을 꼭 지켜야 합니다.

You must follow electricity safety rules.

수칙 (rules/regulations).

정부는 전기차 보조금을 확대하기로 했습니다.

The government decided to expand electric vehicle subsidies.

-기로 하다 (to decide to).

전기 생산 방식이 환경에 미치는 영향이 큽니다.

The way electricity is produced has a big impact on the environment.

미치는 영향 (impact that it has).

태양광을 이용해 전기를 직접 만듭니다.

We make electricity ourselves using solar power.

이용해 (using/utilizing).

전기 전도율이 높은 금속은 무엇인가요?

Which metal has high electrical conductivity?

전도율 (conductivity rate).

전력 부족 현상을 해결하기 위해 노력 중입니다.

Efforts are being made to solve the power shortage phenomenon.

-기 위해 (in order to).

전기 회로가 복잡해서 이해하기 힘들어요.

The electric circuit is complex, so it's hard to understand.

-기 힘들다 (to be hard to do).

누전으로 인해 전기가 차단되었습니다.

The electricity was blocked due to a short circuit/leakage.

-로 인해 (due to/because of).

전기 요금 체계가 개편될 예정입니다.

The electricity rate system is scheduled to be reorganized.

-(으)ㄹ 예정 (scheduled to).

전기 에너지는 현대 문명의 근간을 이룹니다.

Electric energy forms the foundation of modern civilization.

근간을 이루다 (to form the foundation).

한국의 전기 보급률은 세계 최고 수준입니다.

Korea's electricity supply rate is at the world's highest level.

보급률 (supply/penetration rate).

신재생 에너지로의 전환은 전기 산업의 화두입니다.

The transition to renewable energy is a hot topic in the electricity industry.

화두 (topic of conversation/mantra).

전기 자극을 통해 근육을 치료하기도 합니다.

Muscles are sometimes treated through electric stimulation.

-기도 하다 (sometimes does/also does).

전기 저항이 없는 초전도체 연구가 활발합니다.

Research on superconductors with no electrical resistance is active.

초전도체 (superconductor).

전력망의 지능화를 통해 전기 낭비를 줄입니다.

Electricity waste is reduced through the digitalization of the power grid.

지능화 (intellectualization/smart-tech integration).

전기차 배터리의 수명은 핵심적인 기술 과제입니다.

The lifespan of electric vehicle batteries is a key technical challenge.

과제 (task/challenge).

전기 요금 누진제에 대한 찬반 논란이 뜨겁습니다.

The controversy for and against the progressive electricity rate system is heated.

찬반 논란 (pro and con controversy).

전기라는 무형의 에너지가 인류의 삶을 송두리째 바꿔놓았다.

The intangible energy called electricity has completely changed human life.

송두리째 (completely/root and branch).

국가 전력 수급의 안정성은 국가 안보와 직결되는 중대 사안이다.

The stability of national power supply and demand is a major issue directly linked to national security.

직결되다 (to be directly linked).

전기 전도성의 미세한 차이가 반도체 성능을 좌우한다.

Minute differences in electrical conductivity determine semiconductor performance.

좌우하다 (to influence/determine).

에너지 안보 차원에서 전기 생산의 다변화가 절실히 요구된다.

Diversification of electricity production is urgently required from an energy security perspective.

절실히 (urgently/desperately).

전기차 시장의 급성장은 기존 내연기관 산업에 실존적 위협이 되고 있다.

The rapid growth of the electric vehicle market is becoming an existential threat to the existing internal combustion engine industry.

실존적 위협 (existential threat).

스마트 그리드는 전기 소비의 패러다임을 근본적으로 혁신할 것이다.

Smart grids will fundamentally innovate the paradigm of electricity consumption.

패러다임 (paradigm).

전기 에너지의 저장 기술인 ESS의 발전이 향후 에너지 정책의 핵심이 될 전망이다.

The development of ESS, an electric energy storage technology, is expected to be the core of future energy policy.

전망이다 (is a prospect/outlook).

전기라는 물리적 현상을 넘어, 그것이 지닌 사회경제적 가치를 재조명해야 한다.

Beyond the physical phenomenon of electricity, we must re-examine its socio-economic value.

재조명하다 (to re-examine/shed new light on).

Common Collocations

전기를 아끼다

전기가 나가다

전기가 들어오다

전기 요금

전기 자동차

전기 밥솥

전기 코드

전기 점검

전기 소모

전기 안전

Common Phrases

전기가 끊겼어요

전기를 켜다

전기를 끄다

전기가 통하다

전기세가 많이 나오다

전기 장판

전기 충전

전기 공사

전기 스위치

전기 효율

Often Confused With

전기 vs 전기 (biography)

전기 vs 전기 (former period)

전기 vs 전기 (early stage)

Idioms & Expressions

Easily Confused

전기 vs

Sentence Patterns

How to Use It

nuance

Informally, people say '전기세' (electricity tax), but officially it is '전기 요금' (electricity fee).

caution

Don't confuse with '전기' (biography).

Common Mistakes

Using '전기를 죽이다' instead of '전기를 끄다'.
Confusing '전기' (electricity) with '전자' (electronics).
Saying '전기 요금' for a biography.
Misusing particles: '전기에서' instead of '전기로'.
Thinking '전기' only means light bulbs.

Tips

Prefix Power

Add '전기' to many household items to name them (e.g., 전기포트, 전기난로).

Summer Rates

Be careful with AC in Korea; '전기 요금' can jump significantly due to the progressive rate system.

Verbs

Remember: Lights are '켜다/끄다', but electricity supply '들어오다/나가다'.

Safety First

'감전' is the word for electric shock. Always be careful with '전기'!

Flat Tone

Keep the pitch relatively flat and even for both syllables.

Hanja

Knowing 電 (lightning) helps you learn other words like 전구 (bulb) and 전선 (wire).

Announcements

If you hear '정전' (jeong-jeon), prepare for the '전기' to go out.

Slang

Use '전기세' with friends, but '전기 요금' in formal settings.

Energy

Think of 'Gi' (energy) in 'Qi-gong'. 'Jeon-gi' is just 'Electric-energy'.

Gas vs Electric

In Korea, '가스' is for cooking/heating, '전기' is for lights/appliances.

Memorize It

Word Origin

Sino-Korean

Cultural Context

Korea is a world leader in electric vehicle battery technology (LG, SK, Samsung).

First introduced in 1887 at Gyeongbokgung Palace.

Practice in Real Life

Real-World Contexts

Conversation Starters

"요즘 전기 요금이 너무 많이 나오지 않아요?"

"전기차에 대해 어떻게 생각하세요?"

"갑자기 전기가 나가면 어떻게 하실 거예요?"

"집에서 전기를 아끼는 방법이 있나요?"

"전기 밥솥으로 만든 밥이 제일 맛있죠?"

Journal Prompts

하루 동안 전기 없이 살아야 한다면 어떨까요?

내가 사용하는 전기 제품 중 가장 중요한 것은?

전기 요금을 줄이기 위한 나의 노력.

전기 자동차가 환경에 정말 도움이 될까요?

처음 전기를 발견했을 때 사람들의 반응은 어땠을까요?

Frequently Asked Questions

10 questions

전기 is the general term for electricity as a phenomenon or energy. 전력 refers specifically to electric power or the amount of energy used per unit of time (wattage).

You can say '전기가 나갔어요' or '정전이에요'.

It is commonly used in daily speech, but '전기 요금' is the technically correct term because it's a service fee, not a tax.

Literally, it means electricity is flowing through something. Figuratively, it means two people have good chemistry or understand each other well.

It is '전기 자동차' or simply '전기차'.

It is called '전기 밥솥'.

Batteries are '전지' or '배터리', but they provide '전기'.

You say '전기를 아끼다' or '절전하다'.

Yes, it is a homonym. '위인 전기' means a biography of a great person.

Korea uses 220V '전기'.