Question

A bar magnet of geometric length 12cm has a magnetic moment of magnitude 3 A.m2
Determine its magnetic length.​

Answer 1

Answer:

Explanation:

magnetic length= 5/6 geometric length

mag length= 5/6 * 12 = 10cm= 0.1m

M= m* 2l

3= m* 0.1

m= 30A-m

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Answer 2

Given,

Geometric length of bar magnet=12cm

Magnetic moment=3 A.m²

To Find,

Its magnetic length.

Solution,

In magnetic field we know that there are two types of length one is magnetic length and the other one is geometric length.

And magnetic length= 5/6×geometric length

Here we have the value of geometric length so we can calculate magnetic length.

So, magnetic length=5/6×12=10cm

Hence, its magnetic length is 10cm.