The pole strength of a bar magnet is 48 ampere-metre and the distance between its poles is
Channel: Doubtnut
Date: 2020-01-19

The pole strength of a bar magnet is 48 ampere-metre and the distance between its poles is `25cm`. The moment of the couple by which it can be placed at an angle of `30^(@)` with the uniform magnetic intensity of flux density `0.15 \"newton\"//\"ampere-metre\"` will be