A series RC circuit has R = 5 Ω and C = 10 μF. The current in the circuit is 5 sin 20000t. The applied voltage is

1.

A series RC circuit has R = 5 Ω and C = 10 μF. The current in the circuit is 5 sin 20000t. The applied voltage is

[A].	25√2 sin (20000t + 45°)
[B].	25√2 sin (20000t - 45°)
[C].	25√2 sin 20000t
[D].	25√2 sin (20000t - 90°)

Answer: Option B

Explanation:

162-331-1

162-331-2

Z = √R² + X_C² = √50

V = 5√50 sin(20000 t - 45°)

V = 25√2 sin(20000 t - 45°)

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