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  4. In the given circuit the reading of voltmeter V1 and V2 are 300 volts each. The reading of the voltmeter V3 and ammeter A are respectively

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Q. In the given circuit the reading of voltmeter $V_1$ and $V_2$ are $300$ volts each. The reading of the voltmeter $V_3$ and ammeter $A$ are respectivelyPhysics Question Image

AIPMTAIPMT 2010Alternating Current

Solution:

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As $V_L = V_c = 300 \, V$, therefore the given series LCR circuit is in resonance.
$\therefore \, V_R=V=220 \, V$
$ Z=R=100 \, \Omega$
Current,$I=\frac{V}{Z}=\frac{220 \, V}{100 \, \Omega}=2.2 \, A$
Hence, the reading of the voltmeter $V_3$ is $220 \,V$ and the reading of ammeter $A$ is $2.2 \,A$.