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Q.

In the given circuit an ideal voltmeter connected across the 10Ω resistance reads 2V. The internal resistance of each cell is

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a

1Ω

b

0.5Ω

c

1.5Ω

d

0Ω

answer is B.

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Detailed Solution

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i=38+2r

Now voltage across AB

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i×6=38+2r×6=29=8+2rr=12Ω

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