Question

Find out the expression for magnetic field due to a bar magnet in broad side-on position.​

Answer 1

Explanation:

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Answer 2

From north to south, the direction of B is parallel to the magnet's axis. If the magnet is extremely short, d>>l, and the magnetic field at P is very strong.

Assume P is on the equatorial line of the bar magnet. The equatorial line is a line perpendicular to the magnet's axis that bisects it. P is directed away from the N-pole owing to the North Pole, and d is the distance between P and the magnet's center. The magnetic field B2 at P is directed towards the S-pole due to the S-pole. A 2° angle is formed by T B1 and B2. The resultant magnetic field is denoted by B at P. The direction of B is parallel to the magnet's axis from the north to the south pole.