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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

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The correct Answer is:
`20 V`
`V=sqrt(V_(R)^(2)+V_(L)^(2))=sqrt((12)^(2)+(16)^(2))=sqrt(144+256)`
=20 volt
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