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Sahay Sir > Question Answers > NCERT Exemplar Class 12 > Physics > Chapter 4 - Moving Charges and Magnetism > A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, what is the(a) total torque on the coil,(b) the total force on the coil,(c) average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^−5 m^2 , and the free electron density in copper is given to be about 10^29 / m^−3 ).

A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, what is the(a) total torque on the coil,(b) the total force on the coil,(c) average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^−5 m^2 , and the free electron density in copper is given to be about 10^29 / m^−3 ).

(b) the total force on the coil (c) average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^−5 m^2 A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A and the free electron density in copper is given to be about 10^29 / m^−3 ). what is the(a) total torque on the coil