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प्रश्न
Explain why, a freely suspended magnet always points in the north-south direction.
उत्तर
A freely suspended magnet always points towards geographical north and geographical south directions because of the magnetism of the earth. It is assumed that a huge bar magnet is placed at the centre of the earth that causes a freely suspended magnet to align in the directions of north and south poles.
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संबंधित प्रश्न
Fill in the following blank with suitable words:
Magnetic field lines leave the .......... pole of a bar magnet and enter at its .......... pole.
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
Explain what you understand by magnetic induction. What role does it play in attraction of a piece of iron by a magnet?
Explain the following :
When two pins are hung by their heads from the same pole of a magnet, their pointed ends moves apart.
In following figure, draw at least two magnetic field lines between the two magnets.
(a) 
Write a note on the 'magnetic field'.
A battery can supply a charge of 25 × 104 C. If the current is drawn from battery at the rate of 2.5 A, calculate the time in which battery will discharge completely.
The direction of the magnetic lines around a current-carrying conductor can be easily understood using the ______ rule.
Can two magnetic lines of force intersect? Justify your answer:
Assertion (A): Magnetic field lines never intersect each other.
Reason (R): If they intersect, then at the point of intersection, the compass needle would point towards two directions, which is not possible.
