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MHT CET2009PhysicsMagnetic 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 ( B= ₀ n I )

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