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In the circuit shown below, the switch is closed at t = 0, applied voltage is v (t) = 50cos (102t+π/4), resistance R = 10Ω and capacitance C = 1µF. Th

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In the circuit shown below, the switch is closed at t = 0, applied voltage is v (t) = 50cos (102t+π/4), resistance R = 10Ω and capacitance C = 1µF. The current flowing in the circuit at t = 0 is?

(a) 1.53

(b) 2.53

(c) 3.53

(d) 4.53
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The correct option is (c) 3.53

The best I can explain: At t = 0 that is initially current flowing through the circuit is i = V/R cosθ = (50/10)cos(π/4) =  3.53A.
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