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NEST2020PhysicsElectrostatics

The electric field due to an extended charge distribution spread over all space is given by E = q 4 ₀ r^2 (1+ r ) e^ - r r Here and q are positive constants and the electrostatic potential is taken to be zero at infinity. Select the correct statement(s).

Options

  1. AThe electrostatic potential is q e^ - r / 4 ₀ r .
  2. BThe total charge is zero.
  3. CThe flux through a Gaussian sphere centred at the origin and of radius R decreases as we decrease R .
  4. DThere is a positive charge at the origin.

Correct answer

D. There is a positive charge at the origin.

Step-by-step solution

No solution available.

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