Magnetic force or magnetism is the force with which a magnet attracts metals such as iron and nickel, and other magnets. Magnets may also repel each other with the help of a magnetic force. A magnet has a North and a South poles.

Magnetic force or magnetism is the force by which a magnet attracts metals such as iron, nickel and other magnetic materials. It may also repel each other with the help of a magnetic force that acts between the same poles of the magnet.

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Magnetic force is a non-contact force.

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Important Questions on Force and types of force

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Write three main characteristics of a magnet.

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A body has a negative charge of

1 μc

. It means the body has gained:

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Calculate the number of electrons constituting one coulomb of charge.

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What is meant by a non-contact force? Explain with the help of an example.

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An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

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It was _____ who first observed the falling of an apple from the top of a tree and discovered gravitational force. (Sir Isaac Newton / Galileo Galilei)

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Cotyledons are also called-

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Explain why, magnetic force is said to be a non-contact force.

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What is magnetism?

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Name the force generated by a bar magnet.

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When a ball is dropped from a height, its speed increases gradually. Name the force which causes this change in speed.

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Which force can be used to gather iron pins scattered on the floor?

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A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad?

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Give one practical application of magnetic force.

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Recall and complete the concept map given below:

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