9 A potentiometer wire AB having length L and resistance 12r is joined to a...
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9 A potentiometer wire AB having length L and resistance 12r is joined to a cell D of emfe and internal resistance r A cell C having emf and internal resistance 3r is connected The length AJ at which the galvanometer as shown in fig shows no deflection is JEE Main 2019 1 3 1124 12 A Der N m 3r B 2 24 4 13 L 24
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