Generator effect Flashcards

1
Q

What is the generator effect?

A
  • If there is a change in magnetic field around a conductor (a wire moves through a magnetic field), a potential difference is induced across the conductor
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2
Q

What is neede for current to flow through the wire in the generator effect?

A
  • The wire must be connected at the ends to form a complete circuit
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3
Q

What happens to the potential difference when the wire is moved in the opposite direction in the generator effect?

A
  • Direction of the potential difference swaps each time the wire swaps the direction in which it moves
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4
Q

What happens to the potential difference when the wire stops moving and why?

A
  • The potential difference disappears
  • This is because the change in the magnetic field is inducing the potential difference and if the wire stops moving, there is no longer a change in the magnetic field
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5
Q

How do we increase the strength of the potential difference in the generator effect?

A
  • Change the strength of the magnetic field by using stronger magnets
  • Move the wire / magnets more quickly so the change in magnetic field is faster
  • Shape the wire into a coil and the more turns of the coil, the stronger the potential difference is
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6
Q

Motor effect vs generator effect

A
  • Motor effect uses electric current to generate motion
  • Generator effect uses motion to generate electric current
  • Motor effect uses DC current
  • Generator effect produces AC current
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