A compass has a small balanced pointer that always points North-South when suspended freely. This is because :
A
The Earth has a magnetic field and the pointer is magnetic.
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B
The Earth doesn't have any magnetic field.
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C
The compass needle points to cold places.
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D
Of gravitational force of the Earth.
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Solution
The correct option is A
The Earth has a magnetic field and the pointer is magnetic.
The Earth has a substantial magnetic field. No matter where you stand on the Earth, you can hold a compass in your hand and it will always align itself along the Earth's magnetic field.