Practice Motional Emf (1.3) - Electromagnetic Induction and Alternating

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8 questions

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6 sample questions

Question 1.
What is Motional EMF?
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Think about how movement can create electricity.
Question 2.
Which factors affect the induced EMF?
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Think of the FMV acronym: Field, Motion, Velocity.
3Question 3.
What is the equation for calculating the induced EMF when a conductor moves through a magnetic field?
- ε = B · l · v · sin(θ)
- ε = B · v · θ
- ε = l · v · θ
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Look for the equation we discussed in class.
4Question 4.
True or False: The angle θ in the motional EMF equation only affects the direction of the induced current, not its magnitude.
- True
- False
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Think about how angles relate to sine values.
Question 5.
A conductor of length 1.5 m moves with a velocity of 4 m/s in a magnetic field of strength 0.8 T at θ = 30°. Calculate the induced EMF.
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Remember to convert the angle to sine.
Question 6.
If the same conductor is rotated so that it moves perpendicular to the magnetic field lines, what will the induced EMF be?
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Think about the change in angle and how it affects the sine value.

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