A circular coil of radius 0 157 m has 50 turns It is placed

Last updated: 6/9/2023

A circular coil of radius 0 157 m has 50 turns It is placed such that its axis is in magnetic meridian A dip needle is supported at the centre of the coil with its axis of rotation horizontal and in the plane of the coil The angle of dip becomes 30 when a current flows through the coil The angle of di becomes 60 on reversing the current Find the current in the coil assuming that the magnetic fiel due to the coil is smaller than the horizontal component of earth s magnetic field 4 x 107 V s A m and H 3 10 T