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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A copper ring as shown in the figure is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is

A copper ring as shown in the figure is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is

A winding wire which is used to frame a solenoid can bear a maximum 10 A. current If length of solenoid is 80 cm and its cross sectional radius is 3 cm then required length of winding wire is (B =0.2T)