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JEE Advanced 2020 Full Test 6 Paper 1

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Question : 18

Total: 54

In the given circuit wire AB is of uniform resistance. On closing switch 2 with other two switches open, the balance length AJ is L1. On closing all the switches, the balance length AJ1 is L2. The internal resistance of the battery V is nRΩ. Find n. (‌

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