Question

when a current is passed through a coil of wire with a piece of iron inside (an electromagnet,a commutator) is formed?

Answer 1

Electromagnet

Answer 2

http://www.ehow.com/info_8113905_happens-electricity-passes-through-electromagnet.html

Answer 3

thanks

Answer 4

Your welcome :)
any other questions?

Answer 5

ummm : coil is rotated by an outside source of ______ energy.

Answer 6

That is mechanical energy

Answer 7

okay i was thinking it was electrical energy for some reason. And thanks again !!!

Answer 8

Coil is rotated by an outside source of mechanical energy
Examples: Steam, wind, water

As the coil turns in the magnetic field, electric current flows through the wire

When the coil turns so that the ends move past opposite ends of the magnet:
The current reverses direction

The current changes direction twice with each revolution
A generator that is used in a car is known as an alternator

Answer 9

okay gottcha!

Answer 10

keep posting questions and i will continue to help you out!