Q109 / 180 · NEET 2019 (All India) · Physics

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

  • A
    increases 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.
  • C
    zero as r increases for r<R , increases as r increases for r>R.
  • D
    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.

Hence, the correct answer is option: 'B'.

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