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Flashcards in Electric Currents Deck (8)
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1
Q

What do all materials contain?

A
  • Electrons
2
Q

What do insulating materials have?

A
  • Electrons that cannot move around
3
Q

How is an electric current formed?

A
  • Through if there are electrons in a metal flow
4
Q

Define ‘Current’

A
  • Rate of flow of charged particles
5
Q

Define ‘Alternating Current’

A
  • Electrons change direction many times each second
6
Q

What does the size of the current depend on?

A
  • How much charge is passing a point in a circuit each second
7
Q

How can we work out the charge?

A
  • Current x Time
8
Q

How can we change the size of the current in a circuit?

A
  • Change the potential difference (voltage) of the cell or power supply