Physics · 2022
JEE Main · 25 June 2022, Shift 2 · Q39
Two cells of same emf but different internal resistances r_1 and r_2 are connected in series with a resistance R. The value of resistance R, for…
Two cells of same emf but different internal resistances $\displaystyle r_1$ and $\displaystyle r_2$ are connected in series with a resistance $\displaystyle R$. The value of resistance $\displaystyle R$, for which the potential difference across second cell is zero, is :
Official answer
(1)
$\displaystyle r_2-r_1$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.