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A 6V battery of negligible internal resistance is connected across a uniform wire AB of length 100cm. The positive terminal of another battery of emf 4V and internal resistance $1 Ω$ is joined to the point A as shown in figure. Take the potential at B to be zero. If the points C and D are connected by a wire, what will be the current through it in amperes?

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2.7

answer is C.

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Detailed Solution

$V = ξ - i r;$ C and D are connected with wire current becomes zero

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