Q. A hollow metallic sphere of radius 10 cm is given a charge of $3.2 \times 10^{- 9}\ $C.The electric intensity at a point 4 cm from the centre is
A) 9$\times 10^{- 9}\ $NC$^{-1}$
B) 288 NC$^{-1}$
C) 2.88 NC$^{-1}$
D) Zero
Explanation
(d) Inside the sphere at any point, $E = 0.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.