Practice Summary (3.4) - Magnetic Effect of Current and Magnetism

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8 questions

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Exercise
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6 sample questions

Question 1.
What does Oersted's experiment demonstrate?
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Think of the relationship between electricity and magnetism.
Question 2.
Write down the formula for the magnetic field around a long straight wire.
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It involves μ0, current, and distance from the wire.
3Question 3.
What phenomenon did Oersted discover?
- Electric currents create sound
- Electric currents create magnetic fields
- Electric currents increase resistance
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Remember what influences compass needles.
4Question 4.
Is it true that magnetic monopoles exist?
- True
- False
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Think about how magnets always come in pairs.
Question 5.
Calculate the expected magnetic field strength at a distance of 0.1m from a long straight wire carrying a current of 5A.
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Keep track of your units and simplify carefully!
Question 6.
Discuss how Earth's magnetic field aids in animal navigation and relate it to concepts studied.
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Consider the behavior of migratory birds!

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