A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r…

A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the center
  1. increases as r increases for r<R and for r>R.
  2. zero as r increases for r<R , decreases as r increases for r>R.
  3. zero as r increases for r<R , increases as r increases for r>R.
  4. decreases as r increases for r<R and for r>R.

Solution

Inside the sphere, electric field is zero.
Outside the sphere, electric field is E=14πε0Qr2
∴ It decreases with r, outside the sphere.

Asked in: NEET 2019 (All India)

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