Physics Unit 9 - Magnetism and Modern Physics (Practice)
Flashcard
•
Physics
•
10th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the magnetic pole that points to the geographic north?
Back
The north pole of the magnet.
2.
FLASHCARD QUESTION
Front
What is the primary source of energy radiated by stars like the sun?
Back
Fusion reactions.
3.
FLASHCARD QUESTION
Front
What is a coil of wire with an electric current in it called?
Back
A solenoid.
4.
FLASHCARD QUESTION
Front
What device increases or decreases the voltage of an alternating current?
Back
Transformer.
5.
FLASHCARD QUESTION
Front
Why do power companies prefer to transmit electricity using AC power?
Back
AC power can travel over longer distances.
6.
FLASHCARD QUESTION
Front
What is magnetism?
Back
A physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.
7.
FLASHCARD QUESTION
Front
What is the difference between AC and DC current?
Back
AC (Alternating Current) changes direction periodically, while DC (Direct Current) flows in one direction.
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