electro magnets

the ends of the magnet are called

• poles

• magnetic poles

• north pole

the north pole of a magnet will turn to point

• south

• north

• both south and north

like poles

• repel

• attract

unlike poles

• repel

• attract

• none of the above

• both a and b

a magnet is surrounded by

• electric fields

• magnetic field

• iron ore

magnetic field lines are drawn to show the direction and

• strength of the field

• compass

does earth have a magnetic field?

• yes

• no

a coil of wire in which an electric current flows is called

• electric circuit

• electromagnet

an electromagnet can be made stronger by adding an

• copper core

• iron core

an instrument that is used to measure the electrical currents is called

• voltmeter

• ammeter