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Manipal MET2018PhysicsMagnetic Effects of Current

A long solenoid of length L has a mean diameter D . It has n layers of winding of N turns each. If it carries a current i , the , magnetic field at its centre will be

Options

  1. Aproportional to D
  2. Binversely proportional to D
  3. Cindependent of D
  4. Dproportional to L

Correct answer

C. independent of D

Step-by-step solution

Magnetic field due to solenoid is independent of diameter (Because B= ₀ n i ).

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