A capacitor is charged to 3.0×10 4 C , then discharged by connecting a wire betw
ID: 1454625 • Letter: A
Question
A capacitor is charged to 3.0×104C , then discharged by connecting a wire between the two plates. 35 s after the discharge begins, the capacitor still holds 12% of its original charge. What was the average current during the first 35 s of the discharge A capacitor is charged to 3.0×104C , then discharged by connecting a wire between the two plates. 35 s after the discharge begins, the capacitor still holds 12% of its original charge. What was the average current during the first 35 s of the dischargeExplanation / Answer
Apply, I = dQ/dt
= (Q1 - Q2)/t
= (Q1 - 0.12*Q1)/t
= 0.88*Q1/t
= 0.88*3*10^-4/(35*10^-6)
= 7.54 A
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