Ex

  Physics (NTSE/Olympiad)  

2. Magnetic Effect of Current

Earth’s Magnetic Field

Earth’s Magnetic Field
Earth Magnetism : Earth behaves as a huge magnet (or a giant solenoid). The source of this huge magnetism is given as the molten charged metallic fluid giving rise to a current flowing inside the core of the earth. This core has a radius of about 3500 km (earth’s radius is 6400 km) .
Some Associated Terms
1. South Magnetic Pole (S) : It is near north geographical pole N.
2. North Magnetic Pole (N) : It is near south geographical pole S.

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