Magnetism and electricity

1- The temporary magnet is made from......

• Steel

• Rought iron

• Nickel

• Copper

2- The main idea of making temporary magnet is to convert.....

• Magnetic energy into electric

• Light energy into magnetic

• Electric energy into magnetic

3- By increasing the intensity of electric current passing through the coil .....

• The magnetic force of magnet increases

• The magnetic force of magnet decreases

• The magnetic force of magnet remains the same

4- The magnetic force of the electromagnet will be lost by .....

• Increasing number of coil turns

• Increasing number of batteries

• Cutting the electric current

• Switching on the key

5- From the devices that have electromagnet inside them .....

• Television

• Refrigerator

• Electric mixer

• Disc drive

6- The coil of the electromagnet is made of.....

• Iron

• Copper

• Plastic

• Aluminium