Question

22. The current in an inductor is 0.20 A, and the frequency is 750 Hz. If the inductance is 0.080

H, what is the voltage across the inductor?
A. 70 V
B. 75 V
C. 150 V
D. 140 V​

Answer 1

B. 75V

Step-by-step explanation:

The formula for Voltage across and Inductor is given as:

Vr.m.s = Ir.m.s × XL

Where

Ir.m.s : Current across the inductor

XL = 2πFL

In the question we were given values

Ir.m.s = 0.20A

F = 750Hz

L = Inductance = 0.080H

Vr.m.s = 0.20 × ( 2 × π× 750Hz × 0.080H)

Vr.m.s= 0.20 × 376.99111843

Vr.m.s = 75.389223686volts

Approximately = 75volts

Therefore, the voltage across the inductor is 75 volts.