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9 April, 06:41

How is the Earth's magnetic field like a bar magnet's magnetic field?

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  1. 9 April, 07:08
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    In the outer layers of earths atmosphere gases are in ionized state primarily on account of cosmic rays. as earth rotates, strong electric current are set up due to movement of ions. these currents form earth magnetic field. and thus two equal and opposite poles of earth formed
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