alleryStart learning →Energy stored in a capacitor:
ACV²
BCV
C½ CV² (= ½ Q²/C)
DQ V
Answer & Solution
Correct answer: C. ½ CV² (= ½ Q²/C)
**Capacitor energy:** U = ½ CV² = ½ QV = Q²/(2C). Q = CV.
Stored as electric field between plates.
Discharge can be rapid (lightning bolt).
Capacitor banks store energy in pulsed systems.
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