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In this article you will get the solution of  the questions from the chapter Moving Charges and Magnetism.

Q – 4.1:       A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?

Ans:            Number of turns on the circular coil, n = 100              Radius of each turn, r = 8.0 cm = 0.08 m

                    Current flowing in the coil, I = 0.4 A, Magnitude of the magnetic field at the centre of the coil is given by the      relation,

                 To see the solutions of all the questions from the exercise click on the following link : 

movingchargesandmagnetism- Solution of NCERT Exercise