The number of magnetic poles when a magnet breaks is
decreases
increases
zero
same
The magnetic field of the Earth is similar to that of a
compass
bar magnet
horse shoe magnet
All of above
A solenoid produces
a strong magnetic field
a weak magnetic field
equal to Earth's magnetic field
a permanent magnetic field
The strength of a electromagnet's magnetic field depends on
no. of turns in its solenoid
magnitude of current flowing through solenoid
material inserted inside the solenoid
All of these
In which direction the magnetic compass pointer always gets attracted?
North
North - East
South
South - West
A dynamo produces
electric current
constant voltage
magnetic field
electric field
The poles of a magnet have the attractive power
Maximum
Minimum
Zero
None of these
In which directions of the Earth, a freely suspended magnet always align?
North - South
North - West
East - West
South - East
Which of the following is a magnetic material?
Cobalt
Aluminium
Copper
Steel
To lift heavy cargo iron container, we use,
solenoid
toroid
weight lifter
electromagnet
