Electromagnetic Effects
Authored by Mary Roma
Science
10th Grade
NGSS covered
Used 13+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the brushes in a motor?
To collect and transmit current
To regulate the voltage
To rotate the armature
To create a magnetic field
Tags
NGSS.HS-PS2-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the commutator in a DC motor?
To collect and transmit current
To rotate the armature
To regulate the voltage
To maintain the polarity of the current
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What rule is used to determine the direction of force in a motor?
Fleming's Left-Hand Rule
Fleming's Right-Hand Rule
Newton's Third Law
Ohm's Law
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the magnetic flux when the armature is rotated from 0 to 90 degrees?
It decreases
It becomes zero
It increases
It remains constant
Tags
NGSS.HS-PS3-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the primary and secondary coils in an AC motor?
To create a magnetic field
To regulate the voltage
To collect and transmit current
To transfer energy through electromagnetic induction
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the source of energy in an electric circuit created by electromagnetic induction?
The heat generated by friction
The presence of a magnetic field
The flow of electrons
The movement of a magnet
Tags
NGSS.HS-PS2-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between an AC motor and an AC generator?
An AC motor converts electrical energy to mechanical energy, while an AC generator converts mechanical energy to electrical energy
An AC motor has brushes and a commutator, while an AC generator does not
An AC motor has a rotor and a stator, while an AC generator does not
An AC motor produces DC current, while an AC generator produces AC current
Tags
NGSS.HS-PS3-3
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