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SAT® Subject Test in Physics

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Moderate

Enlarging Plates of Capacitor

SATPHY-1JEL57

A capacitor is charged with a battery and then removed from the battery.

In this specially designed capacitor, we are able to make the plate size (area) larger without changing anything else.

If the plate area is made larger after the capacitor has been disconnected, what will happen to the charge on the plates, the voltage across the plates, and the value of capacitance for this capacitor?

A
Capacitor Property Values after Plate Area is increased
Charge on Plates smaller
Voltage Across Plates smaller
Capacitance smaller
B
Capacitor Property Values after Plate Area is increased
Charge on Plates larger
Voltage Across Plates smaller
Capacitance larger
C
Capacitor Property Values after Plate Area is increased
Charge on Plates same
Voltage Across Plates larger
Capacitance smaller
D
Capacitor Property Values after Plate Area is increased
Charge on Plates same
Voltage Across Plates same
Capacitance larger
E
Capacitor Property Values after Plate Area is increased
Charge on Plates same
Voltage Across Plates smaller
Capacitance larger