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Q.

In the circuit shown, the resistance of voltmeter is 10,000 ohm and that of ammeter is 20 ohm. The ammeter reading is 0.10 ampere and voltmeter reading is 12 volt Then R is equal to

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a

122  Ω

b

140  Ω

c

116  Ω

d

100  Ω

answer is D.

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Detailed Solution

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 20+R=120.1 ⇒R=100  Ω

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