
Electric Motor Quiz
Authored by Jamie Lam
Physics
8th Grade
Used 8+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What device is used to change the direction of the current every half turn in an electric motor?
Capacitor
Resistor
Transformer
Split ring commutator
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if the direction of the current is not changed in an electric motor every half turn?
The motor will rotate in the opposite direction
The motor will stop working
The motor will overheat
The motor will explode
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the speed of rotations in an electric motor be increased?
Reduce the number of turns in the coil
Increase the number of coils
Decrease the current passing through the wire
Use weaker magnets
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of a split ring commutator in an electric motor?
To increase the resistance in the circuit
To change the voltage of the current
To change the direction of the current every half turn
To store electrical energy
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which direction will a coil rotate if the left side experiences an upwards force and the right side experiences a downward force?
Random direction
No rotation
Anti-clockwise
Clockwise
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of the concept where we can create a spinning motion using electricity?
Electric rotation
Magnetic spinning
Motor effect
Electric revolution
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are some common applications of motors that use the concept of creating spinning motion using electricity?
Fans and vehicles
Refrigerators and ovens
Light bulbs and power sockets
Computers and smartphones
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