Electric Motors (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens when a coil carries current in a magnetic field?
What happens when a coil carries current in a magnetic field?
It experiences a force
What type of motor uses a split-ring commutator?
What type of motor uses a split-ring commutator?
DC electric motor
What is positioned between opposite magnetic poles in a DC motor?
What is positioned between opposite magnetic poles in a DC motor?
A coil of wire
What is each end of the motor coil connected to?
What is each end of the motor coil connected 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 type of forces act on opposite sides of the coil?
What type of forces act on opposite sides of the coil?
Upward and downward
What do the opposite forces on the coil cause?
What do the opposite forces on the coil cause?
Rotation
What does the split-ring commutator change?
What does the split-ring commutator change?
Direction of current
How often does the commutator change current direction?
How often does the commutator change current direction?
Every
What do carbon brushes connect in the motor?
What do carbon brushes connect in the motor?
Rotating and stationary parts
What keeps the coil rotating after a half spin?
What keeps the coil rotating after a half spin?
Reversed current