1) What is Electromagnet?

An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity.

2) How does it work?

An electromagnet works by running electric current through a wire, you can create a magnetic field. An electromagnet starts with a battery and a wire. What a battery produces is electrons..

 

3) How to make an electromagnet?

-Materials

    -One iron nail fifteen centimeters (6 in) long

    -Three meters (10 ft) of 22 gauge insulated, stranded copper wire

    -One or more D-cell batteries

    -A pair of wire strippers

-Proceduers

  -Some of the copper wire needs to be exposed so that the battery can make a good electrical connection. Use a pair of wire strippers to remove a few centimeters of insulation from each end of the wire.

  

-Neatly wrap the wire around the nail. The more wire you wrap around the nail, the stronger your electromagnet will be. Make certain that you leave enough of the wire unwound so that you can attach the battery.

-Attach one end of the wire to the positive terminal of the battery and the other end of the wire to the negative terminal of the battery. If all has gone well, your electromagnet is now working!

 

4) What are the example of electromagnet in our daily life?

-phone

-ATM machine

-CT scan

-playstation 3
-XBOX 360