Alternating Current Ques 17

17. 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

[2010]

(a) $150 $ $V, 2.2 $ $A$

(b) $220 $ $V, 2.2 $ $A$

(c) $220 $ $V, 2.0 $ $A$

(d) $100 $ $V, 2.0$ $ A$

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Answer:

Correct Answer: 17.(b)

Solution:

  1. (b) As $V_L=V_C=300$ $ V$, resonance will take place

$\therefore \quad V_R=220 $ $V$

Current, $I=\frac{220}{100}=2.2 $ $A$

$\therefore$ reading of $V_3=220$ $ V$

and reading of $A=2.2 $ $A$