Physics · 2021
JEE Main · 27 July 2021, Shift 1 · Q7
In the given figure, a battery of emf E is connected across a conductor PQ of length ' l ' and different area of cross-sections having radii r_1 and…
In the given figure, a battery of emf E is connected across a conductor PQ of length ' $\displaystyle l$ ' and different area of cross-sections having radii $\displaystyle \mathrm{r}_1$ and $\displaystyle \mathrm{r}_2\left(\mathrm{r}_2<\mathrm{r}_1\right)$.
Choose the correct option as one moves from P to Q:
Choose the correct option as one moves from P to Q:Official answer
(1)
Drift velocity of electron increases.
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.