#4 ELECTROMAGNETISM Recap
Flashcard
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Electromagnetism?
Back
Electromagnetism is the branch of physics that deals with the interaction between electric charges and magnetic fields.
2.
FLASHCARD QUESTION
Front
What is a current-carrying coil?
Back
A current-carrying coil is a loop of wire through which electric current flows, creating a magnetic field around it.
3.
FLASHCARD QUESTION
Front
How does increasing the number of coils affect a motor's power?
Back
Increasing the number of coils in a motor enhances the magnetic field, resulting in a greater turning effect and more power.
4.
FLASHCARD QUESTION
Front
What role does voltage play in a motor's performance?
Back
Higher voltage increases the current flowing through the motor, which can enhance its speed and power.
5.
FLASHCARD QUESTION
Front
What is the effect of using a stronger magnet in an electric motor?
Back
Using a stronger magnet increases the magnetic field strength, which can lead to higher speed and efficiency of the motor.
6.
FLASHCARD QUESTION
Front
What is a generator?
Back
A generator is a device that converts mechanical energy into electrical energy by moving a conductor through a magnetic field.
7.
FLASHCARD QUESTION
Front
What happens when a magnet is moved inside a coil of wire?
Back
Moving a magnet inside a coil of wire induces an electric current in the coil due to electromagnetic induction.
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