A long solenoid of length L has a mean diameter D. It has n layers of windings of N turns each. If it carries a current ?i? the magnetic field at its centre will be [MP PMT 2000]
A) Proportional to D B) Inversely proportional to D C) Independent of D D) Proportional to L
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For a long solenoid, B=mu*n*I inside the solenoid, where n=N/L.
Hence, B is independent of D and inversely proportional to L
Hence, B is independent of D and inversely proportional to L
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1
Answer:
magnetic field inside the solenoid is taken as u°ni where n is the number of turns per unit length and i is the current flowing ...so a s u can see it is independent of the diameter....
ans is C
Explanation:
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