Physics · Magnetism and Matter
The earth's magnetic field at the equator is approximately 4 × 10-5 T. Estimate the earth's dipole moment. (Take the radius of the earth as 6.4 × 106 m)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 18.92 × 1020 A m2
- 22.10 × 1023 A m2✓
- 31.05 × 1020 A m2
- 41.05 × 1023 A m2
Correct answer
2.10 × 1023 A m2
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