2.1 Disconnecting the Capacitor Imagine that the two capacitor plates are charge

Question

2.1 Disconnecting the Capacitor Imagine that the two capacitor plates are charged and then disconnected from the circuit. The two plates are insulated from each other. 9. Imagine that the plates shrink such that the area A of each plate decreases. Explain if the following quantities increase, decrease, or remain the same: a. The charge, Q, held by the capacitor b. the capacitance C of the capacitor c. the potential difference, AVcap, across the capacitor's plates. 10. Now imagine that the distance d between the plates decreases. Explain if the following quantities increase, decrease, or remain the same:

Explanation / Answer

9. a. The charge Q held by the plates would remain constant
b. C = Ae/d, so if A decreases, C decreases too
c. dV = Q/C, Q is constasnt, C decreases, so, dV increases
10. a. Q would remain constant
b. C = Ae/d (d decreases, C increases)
c. dV cap decreases as C increases

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