state 4 impotant properties of a bar magnet
Answers
Explanation:
Properties of Bar magnet:-
☞It has a north pole and a south pole at two ends. Even if you break a bar magnet from the middle, both the pieces will still have a north pole and a south pole, no matter how many pieces you break it in.
☞Properties of Bar Magnet
The magnetic force of it is the strongest at the pole.
☞If this magnet is suspended freely in the air with a thread, it will not come to rest until the poles are aligned in a north-south position. A Mariner’s Compass uses this property to determine direction.
☞If two bar magnets are placed close to each other, their unlike poles will attract and like poles will repel each other.
☞A bar magnet will attract all ferromagnetic materials such as iron, nickel and cobalt.
Explanation:
1. Attractive property: A magnet can attract small pieces of iron filing or other ferromagnetic materials.
2. Directive property: If a magnet is suspended horizontally by a thin thread (say silk thread), it rests always pointing north-south direction of the earth.
3. Like poles always repel each other and unlike poles attract each other.
4. Poles always exist in pairs: Single pole can never exist.