Question

A bar magnet has geometric length 4.8 x 10²m and
pole strength 200m. Calculate the magnetic dipole
moment of magnet

Answer 1

Answer:

80000 A-m^2

Explanation:hope it will help u.

Answer 2

The magnetic dipole moment of magnet is $8\times10^{4}\ Am^2$

Explanation:

Given that,

Geometric length $l_{g}= 4.8\times10^{2}\ m$

Pole strength = 200 m

We know that,

Magnetic dipole of bar magnet

$M=m\times 2l$....(I)

Where, 2l = magnetic length

m = pole strength

We need to calculate the magnetic length

Using formula of magnetic length

$2l=\dfrac{5}{6}\times l_{g}$

Put the value into the formula

$2l=\dfrac{5}{6}\times 4.8\times10^{2}$

$2l=400\ m$

We need to calculate the magnetic dipole moment of magnet

Using formula of magnetic dipole moment

$M=m\times 2l$

Put the value into the formula

$M=200\times400$

$M=80000\ Am^2$

$M=8\times10^{4}\ Am^2$

Hence, The magnetic dipole moment of magnet is $8\times10^{4}\ Am^2$

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Topic : magnetic dipole moment

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