A parallel plate capacitor with adjustible plate separation d and adjustible are

Question

1. A parallel plate capacitor with adjustible plate separation

d and adjustible area A is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V Volts. (C is the capacitance and U is the stored energy.) Give all correct answers concerning a parallel-plate capacitor charged by a battery (e.g. B, AC, CDF).

1. 
   

A) After being disconnected from the battery, increasing the area A will increase C.
B) With the capacitor connected to the battery, increasing the area A will decrease U.
C) After being disconnected from the battery, increasing d increases U.
D) After being disconnected from the battery, increasing the area A will decrease V.
E) After being disconnected from the battery, increasing d increases V.
F) After being disconnected from the battery, decreasing d decreases C.

Explanation / Answer

A) yes,

B) yes

C) no

D) yes

E) yes

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