1.

In the circuit shown below, the switch is closed at t = 0, applied voltage is v (t) = 100cos (103t+π/2), resistance R = 20Ω and inductance L = 0.1H. The value of c in the complementary function of ‘i’ is?

A. c = -0.98cos⁡(π/2-78.6o)
B. c = -0.98cos⁡(π/2+78.6o)
C. c = 0.98cos⁡(π/2+78.6o)
D. c = 0.98cos⁡(π/2-78.6o)
Answer» B. c = -0.98cos⁡(π/2+78.6o)


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