Physics · 2019
JEE Main · 8 April 2019, Shift 2 · Q17
A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be…
A cell of internal resistance $\displaystyle r$ drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when :
Official answer
(3)
$\displaystyle \mathrm{R}=\mathrm{r}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.