A circular coil of radius 10 cm has 20 turns and carries a current of 5 A
PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A circular coil of radius 10 cm has 20 turns and carries a current of 5 A.
(a) Calculate the magnitude of the magnetic field produced at the centre of the coil.
(b) Keeping the radius and current unchanged, how many turns should the coil have so that the magnetic field at its centre becomes 1.5 times the value obtained in part (a)?