Electric Motors (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens when a coil carrying current is placed in a magnetic field?
What happens when a coil carrying current is placed in a magnetic field?
It experiences a force
What type of motor is described in the revision note?
What type of motor is described in the revision note?
DC electric motor
What is positioned between the two opposite magnetic poles in the motor?
What is positioned between the two opposite magnetic poles in the motor?
A coil of wire
What is each end of the coil connected to?
What is each end of the coil connected to?
A split-ring commutator
What type of power supply is used in a DC electric motor?
What type of power supply is used in a DC electric motor?
Direct current (DC)
What does the flowing current create around the coil?
What does the flowing current create around the coil?
A magnetic field
What happens when the coil's magnetic field interacts with the permanent magnets' field?
What happens when the coil's magnetic field interacts with the permanent magnets' field?
A force is exerted on the coil
What causes the coil to rotate?
What causes the coil to rotate?
Opposing forces on each side
Which rule determines the direction of the force on the coil?
Which rule determines the direction of the force on the coil?
Fleming's left-hand rule
What does the split-ring commutator change every 180°?
What does the split-ring commutator change every 180°?
The direction of current
Why does the split-ring commutator reverse the current?
Why does the split-ring commutator reverse the current?
To keep torque in the same direction
What do carbon brushes connect in the motor?
What do carbon brushes connect in the motor?
Rotating and stationary parts