Electrical energy

Electrical energy can be useful after converted into another form of energy.
a. Electrical energy can be converted into thermal energy, or heat, or mechanical motion, light, sound, and magnetic fields.
b. Changes electrical energy into heat for example at soldering electric, electric irons, and electric stove.
c. Changes electrical energy into mechanical energy, for example in cars, fan and electric drill.
d. While the flashlight bulb and electrical energy is converted into light. Radio and tape recorder converts electrical energy into sound.
e. Two wires of different electrically charged (positive and negative) if contact can result in short circuit or konsluiting. Konsluiting causes electric current to be great, so that the wire or cable through which electric current would overheat and catch fire. This can be prevented by using a fuse.
f. Oersted found that electrical currents affect magnetism. This discovery in 1821.
g. An iron nail wound with copper wire. Then flow the electric current in the wire. The nails become is like a magnet.
h. Magnets made with electric current is called an electromagnet. Electromagnet temporary magnetic properties.
i. Faraday discovered that magnets which can cause an electric current is driven.
j. Electric motors widely used, for example, to turn on the motor vehicle and move the machine. The electric motor also uses electromagnets.
k. Electromagnet is a magnet that occur due to the flow of electricity in a coil. Electromagnets used in electric doorbell, telephone and so on.