Electromagnets
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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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 ferromagnetic core.
2.
FLASHCARD QUESTION
Front
What is a solenoid?
Back
A solenoid is a coil of wire that generates a magnetic field when an electric current passes through it.
3.
FLASHCARD QUESTION
Front
What materials can be used as a ferromagnetic core?
Back
Common ferromagnetic materials include iron, nickel, and cobalt.
4.
FLASHCARD QUESTION
Front
What happens to the magnetic field when the current in a solenoid is increased?
Back
The strength of the magnetic field increases.
5.
FLASHCARD QUESTION
Front
How does a compass work in relation to magnetic fields?
Back
A compass aligns itself with the Earth's magnetic field, pointing towards magnetic north.
6.
FLASHCARD QUESTION
Front
What is the effect of reversing the current in a solenoid?
Back
Reversing the current in a solenoid reverses the direction of the magnetic field.
7.
FLASHCARD QUESTION
Front
What is the relationship between electricity and magnetism?
Back
Electricity and magnetism are interconnected; an electric current produces a magnetic field, and a changing magnetic field can induce an electric current.
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