Ceramic magnets are used in
Dynamos
Generators
Computers
None of these
Which of the following is called suspension train?
Electric train
Electromagnetic train
Diesel train
None of this
Only one magnetic keeper is required for a
Bar magnet
Two bar magnets
Horse shoe magnet or a U- shaped magnet
All the above
The surest test of magnetism is
Attraction
Repulsion
Diffusion
All of these
Every magnet irrespective of its shape has
Both south poles
Both north and south poles
Both north poles
Can't be predicted
Magnets lose their properties if they are
heated
dropped from a height
hit with a hammer
all the above
Which of the following is an Artificial magnets?
Horse shoe magnet
U-Shaped magnet
Magnetic lines of force travel from
South pole of the magnet to its north pole
North pole of the magnet to its south pole
Both direction
Cannot be determine.
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
Magnets
Are used in dynamos and generators
Are used in the construction of toys
Are utilized by making magnetic compass
Possess all the above three properties
