NEET2019PhysicsElectrostaticsActual
A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the center
Options
- Aincreases as r increases for r < R and for r > R .
- Bzero as r increases for r < R , decreases as r increases for r > R .
- Czero as r increases for r < R , increases as r increases for r > R .
- Ddecreases as r increases for r < R and for r > R .
Correct answer
B. zero as r increases for r < R , decreases as r increases for r > R .
Step-by-step solution
Inside the sphere, electric field is zero. Outside the sphere, electric field is E = 1 4 π ε 0 Q r 2 ∴ It decreases with r , outside the sphere.