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Q. What is the force on a wire of length 0.05m placed inside a long solenoid near its centre and making an angle of $30^{\circ}$ with the axis of the solenoid ? The wire carries a current of 10 A and the magnetic field due to the solenoid is 0.2 T .

Moving Charges and Magnetism

Solution:

$F=Bil\,sin\,\theta$