A circular coil of 20 turns and 10 cm radius 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 A, cross sectional area is 10 -5 m 2 and coil is made up of copper wire having free electron density about 10 29 m -3 , then the average force on each electron in the coil due to magnetic field is
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B
Force on each electron,
Here, 
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