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प्रश्न
Repulsion is a surer test of magnetic condition of a body than attraction. Explain.
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उत्तर
Repulsion is the surest test of magnetism because the attraction can be caused between two unlike poles of the two magnets or between the magnet and magnetic substance such as iron, nickel etc. But repulsion is caused when two similar poles approach each other.
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संबंधित प्रश्न
State whether the following statement is true of false:
The axis of earth's imaginary magnet and the geographical axis coincide with each other.
Explain why, a freely suspended magnet always points in the north-south direction.
The magnetic field inside a long straight solenoid carrying current ______.
A magnetic field exerts no force on:
an electrical charge moving perpendicular to its direction
an unmagnetised iron bar
a stationary electric charge
a magnet
What is a natural magnet? State two limitations of a natural magnet.
What is an artificial magnet? State two reasons why do we need artificial magnets .
How will you test whether a given rod is made of iron or copper?
[Hint : Iron rod gets magnetised when placed near a bar magnet by magnetic induction, while copper rod does not get magnetised]
Select the correct option:
The magnetic strength of a bar magnet is:
The magnetic field is the strongest at ____________.
