Question

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 respectively

• A. 150 V, 2.2 A
• B. 220 V, 2.2 A
• C. 220V,2.0A
• D. 100V,2.0A

Answer 1

Answer: (B)

220 V, 2.2 A

Answer 2

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 $2.2 \,A$.