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JEE Main20252 Apr 2025Evening ShiftPhysicsElectrostaticsActual

Consider a circular loop that is uniformly charged and has a radius a 2 . Find the position along the positive z -axis of the cartesian coordinate system where the electric field is maximum if the ring was assumed to be placed in xy-plane at the origin :

Options

  1. Aa 2
  2. Ba 2
  3. Ca
  4. D0

Correct answer

C. a

Step-by-step solution

aligned & E = KQr ( x ^2+ R ^2 )^ 3 / 2 & dE dx =0 & x = R 2 = 2 a 2 = a aligned

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