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Which of the following is not the energy stored in a capacitor?(a) \(\frac{CV^2}{2}\)(b) \(\frac{QV}{2}\)(c) \(\frac{Q^2}{2C}\)(d) \(\frac{QC}{2}\)This question was addressed to me in homework.Asked question is from Basic Network Concepts in section Circuit Elements and Kirchhoff’s Laws of Network Theory

Answer»

Right ANSWER is (d) \(\frac{QC}{2}\)

The explanation is: ENERGY STORED in a capacitor, E = \(\frac{CV^2}{2}\)

Since C = Q/V

E = \(\frac{CV^2}{2} = \frac{QV}{2} = \frac{QC}{2}\).



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