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Physics, 25.03.2020 06:07 Animallover100
Energy of a capacitor. [20] A parallel-plate capacitor has area A and plate separation d. (a) The capacitor is connected to a battery with voltage (EMF) E. What is the potential energy of the capacitor? [6] (b) The capacitor remains connected to the battery, and a polymer slab with thickness d and relative permittivity κ is inserted into the gap. What is the new potential energy of the capacitor? [6] (c) The dielectric is removed, then the battery is disconnected, and the dielectric is reinserted while the battery remains disconnected. What is the internal energy of the capacitor after this process? [6] (d) What is the change of the potential energy of the battery during the process described in part (b)? Hint: work is not zero. [2]
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Energy of a capacitor. [20] A parallel-plate capacitor has area A and plate separation d. (a) The ca...
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