P3, The motor effect

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  • Created by: emmajane_
  • Created on: 05-05-14 10:10
What happens when an electric current flow through a wire? When is the effect used?
A magnetic field is produced around the wire. This field will only remain while current is being passed though. UIsed in electromagnets
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What does a circuit braker do the same job as?
A fuse
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What do loudspeakers do?
They transform electrical signals into sound
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Describe the inside of a loud speaker and how it works
Inside there is a permenant magnet. An electromagnet is attached to the speaker cone is the magnetic field of the permenant magnet.
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How can a simple electric motor be built?
Using a coil of wire that is free to rotate between two magnetic poles
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What do electric motors use?
The electric motor effect
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How can the speed of a motor be increased?
By increasing the size of the current or the size of the magnetic field
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Other cards in this set

Card 2

Front

What does a circuit braker do the same job as?

Back

A fuse

Card 3

Front

What do loudspeakers do?

Back

Preview of the front of card 3

Card 4

Front

Describe the inside of a loud speaker and how it works

Back

Preview of the front of card 4

Card 5

Front

How can a simple electric motor be built?

Back

Preview of the front of card 5
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