Question

ab bar magnet of geometric length 12cm has a magnetic moment of magnitude 3a-m2 determine its magnetic length and pole strength​

Answer 1

Explanation:

Given, for a magnet

m,Pole strength=200mA−m=200×10

−3

Am

Length of magnet 2l=12cm=0.12m

Now magnetic moment,M=m×2l=200×10

−3

×0.12

m=0.024A−m

2