Electricity and Magnetism

Flashcard
•
Physics
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What does the Right Hand Rule state?
Back
If you hold a wire in your right hand and point your thumb in the direction of the positive current, the direction that your fingers curl is the direction of the magnetic field.
2.
FLASHCARD QUESTION
Front
What is an electromagnet?
Back
A device that generates a magnetic field when an electric current passes through it, and can be turned on and off.
3.
FLASHCARD QUESTION
Front
How do electromagnets differ from regular magnets?
Back
Electromagnets can be switched off and on, while regular magnets have a constant magnetic field.
4.
FLASHCARD QUESTION
Front
What materials are needed to build an electromagnet?
Back
Battery, Wire, Nail.
5.
FLASHCARD QUESTION
Front
Name three magnetic metals.
Back
Iron, Nickel, Cobalt.
6.
FLASHCARD QUESTION
Front
What is the role of a battery in an electromagnet?
Back
The battery provides the electric current needed to create the magnetic field.
7.
FLASHCARD QUESTION
Front
What is a solenoid?
Back
A coil of wire that generates a magnetic field when an electric current passes through it.
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