Practice Conclusion (8.8) - Electromagnetic Induction - ICSE 11 Electricity and Electronics

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6 sample questions

Question 1.
What is electromagnetic induction?
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Think about how electricity is generated!
Question 2.
Name one application of electromagnetic induction.
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Consider devices that convert energy.
3Question 3.
What is Faraday's First Law of Induction?
- It states that EMF does not change.
- A change in magnetic flux induces EMF.
- There’s no relation between EMF and magnetic flux.
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Look for the law that deals with magnetic changes.
4Question 4.
Lenz's Law states that the induced current...
- True
- False
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Remember the law about opposing forces!
Question 5.
A generator rotates a coil in a magnetic field at a rate of 60 cycles per second. How can you increase the EMF generated?
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Consider factors that influence magnetic flux changes.
Question 6.
In a transformer, if the primary coil has 100 turns and the secondary has 200 turns, what happens to the voltage if the primary voltage is 120V?
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Remember the relationship between turns and voltage!

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