The earth’s magnetic field at the equator is approximately 0.4 G. The earth’s dipole moment is:
(Radius of earth, \(R_{E}=6.4\times10^{6} \) m)
1. \(1.05\times10^{23}\) A-m2
2. \(8.0\times10^{22}\) A-m2
3. \(4.5\times10^{23}\) A-m2
4. \(2.10\times10^{23}\) A-m2

Subtopic:  Earth's Magnetism |
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In the magnetic meridian of a certain place, the horizontal component of the earth’s magnetic field is 0.26G and the dip angle is 60°. The magnetic field of the earth at this location is:

1. 0.25 G

2. 0.20 G

3. 0.35 G

4. 0.52 G

Subtopic:  Earth's Magnetism |
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