A bar magnet NS is moved in the direction indicated by an arrow between two coils AB and CD as shown in the figure. In which coil the direction of current will look like anti-clockwise if viewed from left side?
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Solution
According to Faraday's law, the induced magnetic field in the coil would be such that it opposes the change in magnetic field.
As shown in figure, the magnet moves towards right. Hence the magnetic field towards left decreases in the left coil, and that in right coil increases in right hand coil.
Hence the induced magnetic field in both the coils is anticlockwise when viewed from left side so that the induced magnetic fields in both coils point towards left.