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Electromagnetic Effects

Authored by Mary Roma

Science

10th Grade

NGSS covered

Used 13+ times

Electromagnetic Effects
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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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