Q129 / 200 · NEET 2010 (Screening) · Physics

In the given circuit the reading of voltmeter $V_1$ and $V_2$ are $300 \mathrm{~V}$ each. The reading to the voltmeter $\mathrm{V}_3$ and ammeter $A$ are respectively Figure

  • A
    $150 \mathrm{~V}, 2.2 \mathrm{~A}$
  • Correct answer
    B
    $220 \mathrm{~V}, 2.2 \mathrm{~A}$
  • C
    $220 \mathrm{~V}, 2.0 \mathrm{~A}$
  • D
    $100 \mathrm{~V}, 2.0 \mathrm{~A}$

Solution

For series $L C R$ circuit voltage $\mathrm{V}=\sqrt{\mathrm{V}_{\mathrm{R}}^2+\left(\mathrm{V}_{\mathrm{L}}-\mathrm{V}_{\mathrm{C}}\right)^2}$ Since, $V_L=V_C$ hence $V=V_R=220 \mathrm{~V}$ also, current $\mathrm{i}=\frac{\mathrm{V}}{\mathrm{R}}=\frac{220}{100}=2.2 \mathrm{~A}$

Hence, the correct answer is option: 'B'.

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