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MHT CET20249 May 2024Evening ShiftPhysicsMagnetic Effects of CurrentActual

A current carrying circular loop of radius ' R ' and current carrying long straight wire are placed in the same plane. I_c and I_w are the currents through circular loop and long straight wire respectively. The perpendicular distance between centre of the circular loop and wire is ' d '. The magnetic field at the centre of the loop will be zero when separation ' d ' is equal to

Options

  1. AR I_w I_c
  2. BR I_ e I _ w
  3. CI _ c RI _ w
  4. DI _ w R _ c

Correct answer

A. R I_w I_c

Step-by-step solution

For magnetic field to be zero at centre of loop, Magnetic field due to circular loop = Magnetic field due to current carrying wire array ll & ₀ I_c 2 R = ₀ I_w 2 d & d= R I_w I_c array

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