What advantage does an electromagnet have over a permanent magnet?
A permanent magnet cannot be used to pick up nickel.
An electromagnet can be used for picking up more metals.
An electromagnet can be switched off.
An electromagnet is lighter.
An imaginary line passing through the magnetic north pole and South pole of a bar magnet is called:
Magnetic pole
Length of a magnet
Magnetic axis
Magnetic equator
The region around a magnet where its influence can be felt is called its
Magnetic field
Magnetic lines of force
Magnetic poles
Magnetic axis .
Electro magnets are used in:
Ammeter
Volt meter
Galvanometer
All of these
Which of the following is an Artificial magnets?
Bar magnet
Horse shoe magnet
U-Shaped magnet
Which of the following character is wrong about a magnet ?
Magnetic poles always exist in pairs
like poles attract each others
Magnetic lines of force never intersect
It is impossible to obtain a piece of magnets having only one magnetic pole .
Which pole of a magnet in a compass points north?
Neutral pole
South Pole
North Pole
Both 1 and 3
In which direction do the field lines go around a magnet?
From south to north
It's different for every magnet
Clockwise
From north to south
