Physics · 2019
JEE Main · 9 January 2019, Shift 1 · Q15
For a uniformly charged ring of radius R, the electric field on its axis has the largest magnitude at a distance h from its centre. Then value of h…
For a uniformly charged ring of radius R , the electric field on its axis has the largest magnitude at a distance $\displaystyle h$ from its centre. Then value of $\displaystyle h$ is :
Official answer
(3)
$\displaystyle \frac{\mathrm{R}}{\sqrt{2}}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.