Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 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.