Calculate the energy stored in 20 F capacitor i... - WAEC Physics 1992 Question
Calculate the energy stored in 20μF capacitor if the potential difference between the plates is 40 V.
A
3.2 x10-2J
B
1.6x102J
C
8.0x10-4J
D
4.0x10-4J
correct option: b
E = 1/2cv2 = 1/2 x 10 x 10-6 x 402 = 1.6 x 10-2J
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