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
A freely suspended magnet come to rest always in the
North- south direction
North-west direction
North - east direction
East - west direction
Which of the following property of magnet is utilized by making a magnetic compass?
Attractive property
Repulsive property
Directive property
All the above
Magnets lose their properties if they are
heated
dropped from a height
hit with a hammer
all the above
The poles of a magnet are
N - E
E - W
N - S
W- S
Which of the following is an Artificial magnets?
Bar magnet
Horse shoe magnet
U-Shaped magnet
All of these
Magnetism is a type of
Electricity
Force
Gravity
Pressure
Every magnet irrespective of its shape has
Both south poles
Both north and south poles
Both north poles
Can't be predicted
Why pieces of paper are not attracted by a magnet?
Because paper is not a magnetic substance
Because paper is not sticky
Because paper is not strong
Because paper is a magnetic substance
Which of the following is not a magnetic substance ?
Rubber
Iron
Cobalt
Nickel
