Physics - Magnets

Choose the methods to make a magnet

• Buying it

• Electrical

• Magnetic Induction

• Magic

• Single touch

True or False:

Earth has a magnet inside which generates the magnetic field of the earth

• False

• True

What is the name of the magnetic iron ore?

Choose the properties of magnets

• When a magnet is suspended freely, it rests in a north - south direction

• Poles exist in pairs

• A magnet attracts small pieces of iron

• Like poles repel and unlike poles attract

• All of these

Choose the ways is which we can demagnetise a magnet

• By heating the magnet to more than 176 degrees

• By passing alternate current through a coil around the magnet keeping it in east - west direction

• By eating it

• Magic

• All of these

What does this show?

• Single touch method of magnet

• 2 magnets and a steel bar

• Double touch method of magnet

Where are the poles of a magnet situated?

• Outside the magnet

• In the middle of the magnet

• Everywhere

• Slightly inside the magnet

Choose the objects which attracts magnets

• Iron

• Copper

• Gold

• Nickel

• Magnesium

The ore of magnetite is

• Natural

• Artificial

A magnet has which two poles?

• East and West

• North and South

• North or South

• N and S

• All