Suppose the initial charge on the capacitor given in question 7 is 6 mC. What is the total energy stored in the circuit initially? What is the total energy at later time?
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Suppose the initial charge on the capacitor given in question 7 is 6 mC. What is the total energy stored in the circuit initially? What is the total energy at later time?
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Solution:

Initial energy on capacitor
Any time total energy in the circuit is constant, hence energy later is 0.6 J.
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NCERT Solutions for 12th Class Physics: Chapter 7-Alternating Current