Practice Electromagnetic Induction (D.4) - Theme D: Fields

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10 questions

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4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does Faraday's Law state about induced emf?
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Think about how changes in a magnetic field affect circuits.
Question 2.
What is magnetic flux?
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Consider the angle between the field and the surface.
3Question 3.
According to Faraday's Law, what happens when there is a change in magnetic flux?
- No effect
- Induces emf
- Changes temperature
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Think about how generators work.
4Question 4.
Is Lenz's Law a consequence of conservation of energy?
- True
- False
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Remember how induced currents behave.
Question 5.
A coil with 200 turns is placed in a magnetic field with a strength of 0.5 T. If the area of the coil is 0.1 m² and θ = 0 for maximum flux, calculate the maximum magnetic flux through the coil.
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Focus on how magnetic flux is calculated.
Question 6.
If the magnetic flux in a circuit decreases from 0.8 Wb to 0.4 Wb in 1 second, what is the induced emf?
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Apply the formula for induced emf.

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