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A 500 pF capacitor is connected across a 60 V battery. How much energy does it store?
A0.9 microjoule
B3.0 microjoule
C9.0 microjoule
D1.5 microjoule
Answer & Solution
Correct answer: A. 0.9 microjoule
U = half C V squared = 0.5 x 500e-12 x 3600 = 9e-7 J, which is 0.9 microjoule.
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