1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# A solid metallic sphere has a charge + 3Q. concentric with this sphere is a conducting spherical shell having charge –Q. The radius of the sphere is a and that of the spherical shell is b. (b > a). What is the electric field at a distance R (a < R < b) from the centre.

A
Q2πϵ0R
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
3Q2πϵ0R
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
3Q4πϵ0R2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
4Q2πϵ0R2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is C 3Q4πϵ0R2We only need to consider the E contribution due to sphere. Shell gives zero contribution to E at any point inside it. Use direct formula. E=14πϵ03QR2 E=3Q4πϵ0R2

Suggest Corrections
11
Join BYJU'S Learning Program
Related Videos
Gauss' Law Application - Electric Field Due to a Sphere and Thin Shell
PHYSICS
Watch in App
Join BYJU'S Learning Program