The electric field due to a uniformly charged spherical shell of radius R as a function of the distance from its center is represented graphically by:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3)
Case 1: $r<R$
The electric field is zero because the net charge inside a Gaussian shell is -
$E=0$
Case 2: $r≥R$
The electric field is as if the entire charge is concentrated at the center -
$E=\frac{1}{4πε_0}\frac{Q}{r^2}$