Electromagnetism

Magnetism from Electricity 1. ___________can produce a magnetic field and the direction of that field depends on the _________ of the current.

Solenoids 2. Magnetic fields can be increased by increasing the amount of current. A _________ is a coil of wire that produces a _________when carrying an _______________.

How to increase magnetic field in a solenoid a. __________= larger magnetic field b. __________= larger magnetic field

Electromagnetic Electromagnets consists of a _________ wrapped around an __________. a. The field produced by the _________causes the ___________inside the iron core to become ___________making it stronger than a regular solenoid. b. Electromagnets can be turned _____ and ___

c. You can additionally make the electromagnets __________ by increasing ________, the size of the ________ or the __________in the wire. d. Strong electromagnets can lift trains!

Magnetic Force & Electric Current Not only can an electric current cause __________ to move but Magnets can cause _____________to move!

Applications of Electromagnetism Doorbells – doorbells contain a ________ with an ___________ inserted part way. The current is controlled by the ________. Press the button and a _________ in the solenoid circuit closes. The ___________that is created pushes the ________ into the bell.

Electricity from Magnets Electromagnetic _________ is when electric current is produced by changing a magnetic field.

Applications Generators use electromagnetic __________ to convert kinetic energy to _________ energy. A coil of wire is placed between the poles of a permanent magnet. As the crank is turned the coil cuts through the _____________lines and induces an _______________in the wire.