what should be the amount of current through the ring of radius 5 centimetre so that field at the centre is equal to a magnetic field of 7 into 10 raise to power minus 5
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non conducting ring of radius r and mass m is given charge q which is uniformly distributed over it it is kept in a magnetic field b which is spread in a circular region of the radius a as shown in the figure the centre of the ring coincides with the centre of the field is the magnetic field is suddenly switched off then the angular velocity of the ring will be
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