A circular coil of radius 20 cm and 20 turns of wire is

Last updated: 6/27/2023

A circular coil of radius 20 cm and 20 turns of wire is mounted vertically with its plane in magnetic meridian A smal magnetic needle free to rotate about vertical axis is placed at the center of the coil It is deflected through 45 whe a current is passed through the coil in equilibrium Horizontal component of earth s field is 0 34 x 10 T The curre in coil is 17 1 A 10t 2 6A 3 6 x 10 A 3 4 A 50