What is an electromagnet?
Circuits & Electromagnets

Flashcard
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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An electromagnet is a temporary magnet created by placing a piece of iron inside a current-carrying coil of wire.
2.
FLASHCARD QUESTION
Front
How does the number of loops in a wire affect the strength of an electromagnet?
Back
The more loops of wire there are, the stronger the magnetic field produced by the electromagnet.
3.
FLASHCARD QUESTION
Front
What happens to the strength of an electromagnet when the current increases?
Back
The stronger the current, the stronger the magnetic field of the electromagnet.
4.
FLASHCARD QUESTION
Front
What do electric currents produce?
Back
Electric currents produce magnetic fields.
5.
FLASHCARD QUESTION
Front
Do electromagnets require a power source?
Back
Yes, electromagnets need a power source to function.
6.
FLASHCARD QUESTION
Front
What does it mean if a circuit is 'broken'?
Back
A circuit is broken if the switch is open, preventing current from flowing.
7.
FLASHCARD QUESTION
Front
What is the role of a switch in a circuit?
Back
A switch controls the flow of electricity in a circuit by opening or closing the circuit.
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