Please HELP ME!! Here is the question... In an RC series circuit, E = 12.0 V, R

Question

Please HELP ME!! Here is the question... In an RC series circuit, E = 12.0 V, R = 1.40 M,and C = 1.80 F. (a) Calculate the time constant. (b) Find themaximum charge that will appear on the capacitor during charging.(c) How long does it take for the charge to build up to 16.0C? Please HELP ME!! Here is the question... In an RC series circuit, E = 12.0 V, R = 1.40 M,and C = 1.80 F. (a) Calculate the time constant. (b) Find themaximum charge that will appear on the capacitor during charging.(c) How long does it take for the charge to build up to 16.0C?

Explanation / Answer

A) Time constant of the ckt = R*C = 1.4 M * 1.8 = 2.52 S B) the max.charge Qmax = C * V = 1.8 * 12 =21.6 C C) Q = C * V so,,V = Q/C = 16 / 1.8 = 8.89V....this means that when charge is 16 C,,the voltage acrosscap = 8.89 V As per capacitor charging formula.. Vc = Vmax (1-1/e^t/) Here Vc = 8.89 V ..Vmax = 12 and = 2.52 S so,,from these,,the time required = 3.4S hope it helps... hope it helps...

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