NEET Physics Alternating Current Questions Solved

NEET - 2011

In an AC circuit an alternating voltage e=200 2 sin 100t volt is connected to a capacitor 1 μF. The rms value of the current in the circuit is

(a) 100 mA

(b) 200 mA

(c) 20 mA

(d) 10 mA

Given, e=2002sin 100tand   C=1 μF

        Erms=200 V     Xc=1ωC=11×10-6×100=104 Ω    irms=ErmsXC·    irms=200104=2×10-2      A=20 mA

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