A rod PQ of mass m length R 2 is hinged at P in a

Last updated: 6/24/2023

A rod PQ of mass m length R 2 is hinged at P in a cylindrical magnetic field region or radius R with horizontal axis as shown The magnetic field is increasing at a rate of B T s If the rod is released from the initial position as shown The induced emf is found to be zero when end Q just enters the cylindrical region The magnetic field at that instant is 4p X X X X R X X P Initial position of rod X R 2 R X B R 6g X 1 2 value of p is m