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NEET 2019
Exam
NEET
Year
2019
Subject
Physics
Chapter
Electrostatics

NEET 2019 · Physics · Electrostatics

A hollow metal sphere of radius R is uniformly charged. The...

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

Options

  1. Aincreases as rr increases for r<Rr < R and for r>Rr > R.
  2. Bzero as rr increases for r<Rr < R , decreases as rr increases for r>Rr > R.
  3. Czero as rr increases for r<Rr < R , increases as rr increases for r>Rr > R.
  4. Ddecreases as rr increases for r<Rr < R and for r>Rr > R.

Correct answer

B. zero as rr increases for r<Rr < R , decreases as rr increases for r>Rr > R.

Step-by-step solution

Inside the sphere, electric field is zero.
Outside the sphere, electric field is E=14πε0Qr2E = \dfrac{1}{4\pi{ε}_{0}}\dfrac{Q}{{r}^{2}}
∴∴ It decreases with r,r, outside the sphere.
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