Practice Electromagnet (8.10) - Electricity and Magnetism

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What creates an electromagnet?
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Think about the role of electricity in magnetism.
Question 2.
What happens to an electromagnet when the current stops?
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Remember the temporary nature of electromagnets.
3Question 3.
What is an electromagnet?
- A permanent magnet
- A temporary magnet created by electric current
- A type of battery
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Consider the definition of electromagnets.
4Question 4.
True or False: The magnetic field of an electromagnet only exists when current flows through it.
- True
- False
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Think about what happens when the current is turned off.
Question 5.
Design an experiment to test how varying the number of coils affects the strength of an electromagnet. Describe your procedure and expected outcomes.
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Consider how to systematically change one variable (number of coils) while keeping others constant.
Question 6.
Explain how you would apply the principle of electromagnetism in designing an electric motor.
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Think of the relationship of current flow with motion.

5 more questions in this section. Enroll free to practise them all.