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A 50 mu F capacitor is connected to a 100 V, 50 Hz a.c. supply. Determine the rms value of the current in the circuit. |
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Answer» Solution :Here `C = 50 mu F = 50 xx 10^(-6)F = 5 xx 10^(-5)F` `E_(RMS) = 100 V` v = 50 Hz STEP 1 : Capacitive reactance, `X_(C) = (1)/(C omega) = (1)/(C xx 2pi v)` `X_(C) = (1)/(5 xx 10^(-5) xx 2 xx 3.14 xx 50) = 63.69 Omega` Step 2 : `I_(rms) = (E_(rms))/(X_(C)) = (100)/(63.69) = 1.57 A` |
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