Electric Motors (AQA GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens to a coil carrying current in a magnetic field?
What happens to a coil carrying current in a magnetic field?
It experiences a force causing rotation
What type of motor uses a split-ring commutator?
What type of motor uses a split-ring commutator?
DC electric motor
What does each end of the coil connect to?
What does each end of the coil connect to?
A split-ring commutator
What does the flowing current create around the coil?
What does the flowing current create around the coil?
A magnetic field
What does the coil's magnetic field interact with?
What does the coil's magnetic field interact with?
Field from permanent magnets
What causes the coil to rotate?
What causes the coil to rotate?
Upward & downward forces on each side
What determines the direction of force on the coil?
What determines the direction of force on the coil?
Fleming's left-hand rule
What does the direction of force depend on?
What does the direction of force depend on?
Direction of current in wire
How often does the split-ring commutator change current direction?
How often does the split-ring commutator change current direction?
Every 180°
Why does the commutator reverse the current?
Why does the commutator reverse the current?
To keep torque in same direction
What do carbon brushes connect?
What do carbon brushes connect?
Rotating & stationary parts
Until what position does the coil continue rotating?
Until what position does the coil continue rotating?
Vertical position