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 decrease V.

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

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

After being disconnected from the battery, decreasing d decreases C.

After being disconnected from the battery, decreasing d increases U.

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

Explanation / Answer

q=cv

c =epsilon x area/distance

After being disconnected from the battery, inserting a dielectric with will decrease V. - true

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

After being disconnected from the battery, inserting a dielectric with will decrease C. = true

After being disconnected from the battery, decreasing d decreases C.-false

After being disconnected from the battery, decreasing d increases U.-true

After being disconnected from the battery, inserting a dielectric with will increase U. -true

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