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In an A.C. circuit, a resistance R=40 O...

In an A.C. circuit, a resistance `R=40 Omega` and an inductance L are connected in series. If the phase angle between voltage and current is `45^(@)`, then the value of the inductive reactance will be

A

`20 Omega`

B

`40 Omega`

C

`10 Omega`

D

`50 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
For L-R circuit `tan theta = (L omega)/R`
`:. Tan 45^(@) = 1`
`:. X_(L) = L omega = R = 40 Omega`
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