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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A semicircular wire of radius R is rotated R is rotated with constant angular velocity about an axis passing through one end and perpendicular to the plane of the wire. THere is a uniform magnetic field of strength B. The induced emf between the ends is

A semicircular wire of radius R is rotated R is rotated with constant angular velocity about an axis passing through one end and perpendicular to the plane of the wire. THere is a uniform magnetic field of strength B. The induced emf between the ends is

An equilateral triangular loop ADC having some resistance is pulled with a constant velocity v out of a uniform magnetic field directed into the paper (figure). At time t=0 side DC of the loop is at edge of the magnetic field. The induced current (i) versus time (t) graph will be as