Magnetic Field Flashcard
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 wire wound into a coil, often wrapped around a core material like iron.
2.
FLASHCARD QUESTION
Front
How does increasing the number of turns of wire in an electromagnet affect its strength?
Back
Increasing the number of turns of wire in an electromagnet strengthens the magnetic field, making the magnet more powerful.
3.
FLASHCARD QUESTION
Front
What is the role of electricity in creating a magnetic field?
Back
Electricity running through a wire generates a magnetic field around the wire, which can attract or repel magnetic materials.
4.
FLASHCARD QUESTION
Front
What is a common source of magnetic fields in household devices?
Back
Electric circuits are a common source of magnetic fields in household devices.
5.
FLASHCARD QUESTION
Front
What happens to the strength of an electromagnet if the battery runs out of energy?
Back
If the battery runs out of energy, the electromagnet will lose its magnetic field and will no longer be able to attract magnetic materials.
6.
FLASHCARD QUESTION
Front
What is the relationship between electric current and magnetic fields?
Back
Electric current creates magnetic fields; the direction of the magnetic field depends on the direction of the current.
7.
FLASHCARD QUESTION
Front
What is the effect of wrapping more wire around a core in an electromagnet?
Back
Wrapping more wire around a core increases the strength of the magnetic field produced by the electromagnet.
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