A planet has magnetic dipole moment of 27 × 10 22 A m 2 . If the radius of the planet is 300 km , what would be the magnetic field at its equator? Take , μ 4 π = 10 - 7

Question

A planet has magnetic dipole moment of 27 × 10 22 A m 2 . If the radius of the planet is 300 km , what would be the magnetic field at its equator? Take , μ 4 π = 10 - 7, 1 T, 27 T, 11 T, 30 T

MARKS App · Accepted Answer

Considering the whole planet as magnetic dipole, we can write magnetic field at equatorial position as, B e q u a t o r = μ 0 4 π × M r 3 = 10 - 7 × 27 × 10 22 300 × 10 3 3 = 1 T

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