The magnetic field due to the earth is closely equivalent to that due – McqOptions

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1.	The magnetic field due to the earth is closely equivalent to that due to [BIT Ranchi 1982]
A.	A large magnet of length equal to the diameter of the earth
B.	A magnetic dipole placed at the centre of the earth
C.	A large coil carrying current
D.	Neither of the above
Answer» B. A magnetic dipole placed at the centre of the earth

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