JEE Main 2022 (Online) 26th June Evening Shift | Current Electricity Question 136 | Physics

Two cells of same emf but different internal resistances r₁ and r₂ are connected in series with a resistance R. The value of resistance R, for which the potential difference across second cell is zero, is :

r₂ $$-$$ r₁

r₁ $$-$$ r₂

r₁

r₂

JEE Main 2022 (Online) 25th June Evening Shift

MCQ (Single Correct Answer)

-1

If n represents the actual number of deflections in a converted galvanometer of resistance G and shunt resistance S. Then the total current I when its figure of merit is K will be:

$${{KS} \over {(S + G)}}$$

$${{(G + S)} \over {nKS}}$$

$${{nKS} \over {(G + S)}}$$

$${{nK(G + S)} \over S}$$

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