A capacitor with a capacity of 10 μF was given a charge of 4 μKa. What is the energy of a charged capacitor?
| August 20, 2021 | education
Given:
q = 4 μC = 4 * 10 ^ -6 Coulomb – the charge that was reported to the capacitor;
C = 10 μF = 10 ^ -5 Farad is the capacitance of the capacitor.
It is required to determine the energy of the capacitor W (Joule).
W = q ^ 2 / (2 * C) = (4 * 10 ^ -6) ^ 2 / (2 * 10 ^ -5) = 16 * 10 ^ -12 / (2 * 10 ^ -5) = 8 * 10 ^ -7 = 0.8 mcJ.
Answer: the energy of the capacitor is 0.8 μJ.
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