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COMEDK2017PhysicsElectrostatics

The work done in carrying a charge q once round a circle of radius r with a charge Q at the centre is

Options

  1. Aq Q 4 ₀ r
  2. Bq Q 4 ₀² r²
  3. Cq Q 4 ₀ r²
  4. DNone of these

Correct answer

D. None of these

Step-by-step solution

According to given situation of charges, electrostatic force works which is conservative in nature i.e., work done depends on initial and final position only. Here, initial and final position coincide, hence work done will be zero.

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