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Question
A freely suspended magnetic needle always rests in geographic___________ direction.
A freely suspended magnetic needle always rests in geographic___________ direction.
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Solution
The correct option is C North-south
When a magnetic needle is suspended such that it is free to rotate in a horizontal plane, it always rests indicating geographic north-south direction. Since the North Pole of a magnet will point towards the geographic north only when there is the magnetic South Pole attracting the magnet, similarly the South Pole of a magnet will points towards the geographic south when there is the magnetic North Pole attracting it. Thus, the earth’s magnet must have its South Pole in the geographic north and the North Pole in the geographic south.
North-south
When a magnetic needle is suspended such that it is free to rotate in a horizontal plane, it always rests indicating geographic north-south direction. Since the North Pole of a magnet will point towards the geographic north only when there is the magnetic South Pole attracting the magnet, similarly the South Pole of a magnet will points towards the geographic south when there is the magnetic North Pole attracting it. Thus, the earth’s magnet must have its South Pole in the geographic north and the North Pole in the geographic south.
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