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A primary cell has an e.m.f. of $1.5 V,$ when short circuited it gives a current of $3 A$ , then the internal resistance of the cell is

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detailed solution

Correct option is C

emf of a cell E=1.5 V currenti=3 A internal resistance r=Ei ( ∵i=Er ) ⇒r=1.53 ∴ r=0.5 Ω

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A primary cell has an e.m.f. of 1.5 V, when short circuited it gives a current of3 A , then the internal resistance of the cell is

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A primary cell has an e.m.f. of $1.5 V,$ when short circuited it gives a current of $3 A$ , then the internal resistance of the cell is