Which of the following property of magnet is used in electromagnetic train?
Attractive property
Repulsive property
Magnetic attraction and repulsion
Directive property
When two magnets repel each other, they
Push away from each other
Pull towards each other
Neither push not pull
None of these
Which of the following property of magnet is utilized by making a magnetic compass?
All the above
Which of the following is not a magnetic substance ?
Rubber
Iron
Cobalt
Nickel
The region around a magnet where its influence can be felt is called its
Magnetic field
Magnetic lines of force
Magnetic poles
Magnetic axis
The strength of an electromagnet depends on
The amount of current passing though coil
The number of turns of the coil
Both a and b
The thickness of the soft iron which is used to make a magnet
Pick the odd one out
Repulsion
Pointing direction
Attraction
Illumination
The poles of a magnet are
N - E
E - W
N - S
W- S
We can magnetise a magnetic substance without touching it by a magnet by
Single - touch method
Double - touch method
Magnetic induction
Using electric current
If the amount of current passing through the coil is increased ,then the strength of the electromagnet
Increases
Decreases
No change
First increases then decreases
