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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

1 Medium

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Application +4 | -1

Let

P\left( r \right) = \frac{Q}{{\pi {R^4}}}r

be the charge density distribution for a solid sphere of radius

R

and total charge

Q.

. For a point

'p'

inside the sphere at distance

{r_1}

from the centre of the sphere, the magnitude of electric field is

View answer and explanation

Correct option: C

\frac{{Qr_1^2}}{{4\pi { \in _0}{R^4}}}

Option C (

\frac{{Qr_1^2}}{{4\pi { \in _0}{R^4}}}

) is correct because it is derived from Gauss's law, considering the charge enclosed within the sphere of radius

r_1

.

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