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In an ac circuit the potential differenc...

In an ac circuit the potential differences across an inductance and resistance joined in series are, respectively, 16 V and 20 V. The total potential difference across the circuit is

A

20.0 V

B

25.6 V

C

31.9 V

D

53.5 V

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(L)=16 V, V_(R )=20 V`.
In the inductor the current lags by `(pi)/(2)`.

`therefore V = sqrt(V^(2)+V^(2))=sqrt(256+400)`
`therefore V_("total")=25.6 V`.
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