Question

An AC voltage source of amplitude 10V is supplied across an inductor and a resistor wired in series. The voltage amplitude across the inductor is 5V. The voltage amplitude across the resistor is closest to:___________.

Answer 1

8.66 V

Step-by-step explanation:

Vo = 10 v

VL = 5 V

VR = ?

According to the equation of LR circiut

`V_(0)^(2)=V_(R)^(2)+ V_(L)^(2)`

10 x 10 = VR² + 5 x 5

100 - 25 = VR²

VR² = 75

VR = 8.66 V

Thus, the voltage amplitude across the resistor is 8.66 v.

Step-by-step explanation: