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8 AB and CD are two uniform resistance wires of lengths 100 cm and 80...

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8 AB and CD are two uniform resistance wires of lengths 100 cm and 80 cm respectively The connections are shown in the figure The cell of emf 5 V is ideal while the other cell of emf E has internal resistance 2 52 A length of 20 cm of wire CD is balanced by 40 cm of wire AB Find the emf E in volt if the reading of the ideal ammeter is 2 A The other connecting wires have negligible resistance MO 5 V AL Cr E HH 40 cm 20 cm ww 292 1 B D Ammeter ideal

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