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An L-CR series circuit is joined to a so...

An L-C_R series circuit is joined to a source of alternating e.m.f. If `R=9 Omega, X_(L)=28 Omega, X_(C)=16 Omega`, then the impedance of the circuit will be

A

`10 Omega`

B

`15 Omega`

C

`20 Omega`

D

`30 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
`Z = sqrt(R^(2)+(X_(L)-X_(C))^(2)) = sqrt(9^(2)+(28-16)^(2)) = 15 Omega`.
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MARVEL PUBLICATION-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS -TEST YOUR GRASP - 16
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