EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Its magnetic field is strongest near its center.
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It is surrounded by a magnetic field.
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The north pole is stronger than the south pole.
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The south pole is stronger than the north pole.
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Detailed explanation-1: -Which of the following is true of a bar magnet? Its magnetic field is strongest near its center.
Detailed explanation-2: -The poles are regions where the magnet is strongest. The force that a magnet exerts is called magnetic force. The force is exerted over adistance and includes forces of attraction and repulsion. A magnet can exert force over a distance because the magnet is surrounded by a magnetic field.
Detailed explanation-3: -For a bar magnet, it always attracts iron and steel particles. While its like poles repel each other, unlike poles attract each other. When freely suspended, north pole of magnet points towards north pole of the earth. Since, they do not lose their magnetism they are known as permanent magnets.
Detailed explanation-4: -The lines of magnetic field from a bar magnet form closed lines. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. Permanent magnets can be made from ferromagnetic materials.
Detailed explanation-5: -The correct option is D Magnetic poles exert maximum attraction.