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Q.

A voltmeter of resistance 1000 Ω is connected across a resistance of 500 Ω in the given circuit. What will be the reading of voltmeter

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a

1 V

b

2 V

c

6 V

d

4 V

answer is D.

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Detailed Solution

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    Total current through the circuit

i = \frac{{10}}{{\frac{{1000}}{3} + 500}} = \frac{3}{{250}}A

Now voltmeter reading

= {i_v} \times {R_V} = \frac{2}{3} \times \frac{3}{{250}} \times 500 = 4V.

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