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NEET 2019 · Electric Flux & Gauss's Law

Electric Flux & Gauss's Law question from NEET 2019

Q100NEET 2019Easy

Electric Flux & Gauss's Law

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

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Answer: (a)

  1. For r<Rr < R the Gaussian sphere encloses no charge, so E=0E = 0.
  2. For r>Rr > R: E=kQr2E = \frac{kQ}{r^2}, which decreases as rr increases.
  3. So the answer is (a).
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