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Electromagnetism.

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Presentation on theme: "Electromagnetism."— Presentation transcript:

1 Electromagnetism

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

3 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 _______________.

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

5 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 ___

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

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

8 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.

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

10 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.

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