Capacitor

noun
/kəˈpæsɪtər/
A passive electronic component that stores electrical energy in an electric field between two conductive plates separated by a dielectric material.

✍️ Usage in a UPSC answer

Just as a capacitor silently accumulates charge before discharging it in a sudden surge, decades of unaddressed agrarian distress can act as a social capacitor, storing latent grievances that erupt into mass agitation the moment a triggering policy is announced.

Synonyms

condensercharge-storeelectrical accumulatorreservoirstorage element

Antonyms

resistorconductordissipator

🌱 Word Family

capacitor (n), capacitors (n pl), capacitance (n), capacitive (adj), capacitor-based (adj compound)

🔡 Root

English capacity (from Latin capacitas = holding power) + agentive -or; term standardised in 1926 British Engineering Glossary

📜 Etymology

From capacity + -or; the term replaced the older word condenser (coined by Alessandro Volta in 1782) following a recommendation in the 1926 British Standard Glossary of Terms in Electrical Engineering.

🧠 Memory Hook

"CAPACITY to store": a capacitor has the CAPACITY to hold electric charge, just as capere (Latin "to hold") is the root of capacity.

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Prelims 2026 Key
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