Q. Which one of the following graphs figure shows the variation of electric potential V with distance $r$ from the centre of a hollow charged sphere of radius R
A) [image:2_image77.emf]
B) [image:2_image78.emf]
C) [image:2_image79.emf]
D) [image:2_image80.emf]
Explanation
(a) Inside the hollow sphere, $V = \ $constant =potential on the surface of the sphere. Outside the sphere, $V \propto \frac{1}{r}.\ \ $Hence figure (a) represents the correct graph.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.