A parallel plate capacitor with plate separation d is connected to a battery. Th

Question

A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V. (C is the capacitance and U is the stored energy.) Answer the following questions regarding the capacitor charged by a battery. For each statement below, select True or False.

After being disconnected from the battery, inserting a dielectric with will increase C.

After being disconnected from the battery, inserting a dielectric with will decrease U.

With the capacitor connected to the battery, decreasing d increases U.

With the capacitor connected to the battery, decreasing d decreases Q.

With the capacitor connected to the battery, decreasing d increases C.

After being disconnected from the battery, inserting a dielectric with will increase V.

Explanation / Answer

true:

when dielectric inserted then c will increase.

energy will decrease.

if d decreases then c will increases.

if d decreases then u increases.

false:

v will increase when dielectric inserted(v/k)

q decreases

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