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The variation of electric field along the Z -axis due to a uniformly charged circular ring of radius ' a ' in X Y plane is shown in the figure. The value of coordinate M will be

Options

  1. A1 2
  2. B2
  3. C1
  4. D1 2

Correct answer

D. 1 2

Step-by-step solution

For E_ z to be maximum, d E_ z d z =0 z=a / 2 or z a = 1 2

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