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Capacitors

Q1:

A 4.7 M resistor is in series with a 0.015 F capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?

A 35 ms

B 352 ms

C 3.5 s

D 70.5 ms

ANS:B - 352 ms

Time Constant of Capacitor = 5RC.

T = 5 * (4.7*10^-6)(0.015*10^-3).
T = 352.



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