The Motor effect and using Physics to keep things moving,

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  • Created by: Heather
  • Created on: 17-05-14 19:14
In the motor effect, how can the size of the force be increased? (2)
-Increasing the current. -using a stronger magnet,
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How does the angle of the wire to the magnet affect the force? When does it work best/least?
The force is greatest when perpendicular to the magnetic filed but zero when parallel,
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When is the force reversed?
When the direcion of the current or the magnetic field is reversed,
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In an electric motor, how do we control the speed?
By changing the current in the motor,
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In an electric motor, why does when a current passes through the coil, why does it spin? (2)
-A force acts on each side of the coil due to the motor effect, -The force on one side is in the opposite direction to the force on the opposite side,
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How is a loudspeaker desgined to make a diaphragm attached to a coil vibrate?
When alternating current pases through the coil,
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Why does the coil vibrate?
As when a current passes through the coil, a force cue to the motor effect casues the coil to move, -Each tiem the current changes direction, the force reverses its direction so the coil is repeatedly forced back and forth which mkaes it vibrate,
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Other cards in this set

Card 2

Front

How does the angle of the wire to the magnet affect the force? When does it work best/least?

Back

The force is greatest when perpendicular to the magnetic filed but zero when parallel,

Card 3

Front

When is the force reversed?

Back

Preview of the front of card 3

Card 4

Front

In an electric motor, how do we control the speed?

Back

Preview of the front of card 4

Card 5

Front

In an electric motor, why does when a current passes through the coil, why does it spin? (2)

Back

Preview of the front of card 5
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