A magnetic needle is suspended by a thread at its centre and it becomes horizontal when
Channel: Doubtnut
Date: 2020-08-30

A magnetic needle is suspended by a thread at its centre and it becomes horizontal when a weight of 100mg is placed on its front end. If the pole strenght of the needle is 5Am, find the vertical intensity of the earth's field. `(g=9.8m//s^(2))`