Moving Charges and Magnetism Problems - Numerical 10


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10.

A straight solenoid has 400 turns wound on a cylinder of radius 5cm and length 40cm. What is the magnetic field at the mid-point of solenoid when a current of 2A flows in it?

Suggested solution:

N = 400 L = 40cm = 0.4m I = 2A

The magnetic field at the mid-point is

= 2.438 x 10-3 T


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