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The magnetic moment of the assumed dipol...

The magnetic moment of the assumed dipole at the earth's centre is `8.0 xx 10^22 A m^2`. Calculate the magnetic field `B` at the geomagnetic poles of the earth. Radius of the earth is `6400 km`.

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`1.86 xx 10^(9)A`
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The earth’s magnetic field lines resemble that of a dipole at the centre of the earth. If the magnetic moment of this dipole is close to 8 x× 10^(22) Am^(2) , the value of earth’s magnetic field near the equator is close to (radius of the earth = 6.4 × 10^(6) m)

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