
Electromagnets, electric motors & transformers
Flashcard
•
Science
•
5th Grade
•
Practice Problem
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an electromagnet?
Back
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a coil of wire, often wrapped around a core of ferromagnetic material.
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
2.
FLASHCARD QUESTION
Front
Which appliances typically use electromagnets?
Back
Appliances like telephones, televisions, and radios use electromagnets, while a broom does not.
Tags
NGSS.HS-PS2-5
3.
FLASHCARD QUESTION
Front
What is the main function of a transformer?
Back
A transformer is used to change the voltage of an electric current, either increasing (step-up transformer) or decreasing (step-down transformer) it.
Tags
NGSS.HS-PS3-3
4.
FLASHCARD QUESTION
Front
What is the difference between a high-voltage transformer and a low-voltage transformer?
Back
A high-voltage transformer has more insulation between the layers of windings than a low-voltage transformer.
5.
FLASHCARD QUESTION
Front
What happens to a charge moving at right angles in a magnetic field?
Back
The charge moves in a circular path.
6.
FLASHCARD QUESTION
Front
What do unlike magnetic poles do?
Back
Unlike magnetic poles attract each other.
Tags
NGSS.HS-PS3-5
7.
FLASHCARD QUESTION
Front
What do like magnetic poles do?
Back
Like magnetic poles repel each other.
Tags
NGSS.HS-PS3-5
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