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Physics · 2024 · 1 mark
CBSE 2024 · Region 1 · Set 2 · Q2
A charged sphere of radius r has surface charge density σ. The electric field on its surface is E. If the radius of the sphere is doubled, keeping…
A charged sphere of radius $\displaystyle r$ has surface charge density $\displaystyle \sigma$. The electric field on its surface is E. If the radius of the sphere is doubled, keeping charge density the same, the ratio of the electric field on the old sphere to that on the new sphere will be :
Official answer
(D)
$\displaystyle 4$
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