Three capacitors of capacitance 2μF, 4μFand 8μF are connected in parallel and a P.D of 6V is maintained across each capacitor, the total energy stored is?
A
2.52 x 10-6J
B
6.90 x 10-6J
C
2.52 x 10-4J
D
6.90 x 10-4J
Verified Correct Answer: C.
Physical Principles & Numerical Solution
C = C1 + C2 + C3
= 2 + 4 + 8 = 14\muF
V = 6V
Energy = 1/2CV2
1/2 x 14 x 10-6 x 62
= 2.52 x 10-4 J
Source: WAEC / JAMB / NECO Classroom Archive (Record #14511)