Q. 205.0( 1 Vote )

A deflection magnetometer is placed with its arms in north-south direction. How and where should a short magnet having M/BH = 40 A m2T–1 be placed so that the needle can stay in any position?

Answer :

given,


d =?



d ≫≫≫l






d = 0.02 m =2cm


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