SATHEE: Magnetic Effects Of Current Question 85

Magnetic Effects Of Current Question 85

Question: 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]

Options:

A) Proportional to D

B) Inversely proportional to D

C) Independent of D

D) Proportional to L

Show Answer

Answer:

Correct Answer: C

Solution:

Magnetic field due to solenoid is independent of diameter (Because $ B={\mu_{0}}ni $ ).

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Magnetic Effects Of Current Question 85

Question: 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]

Options:

Answer:

Solution:

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