Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What does Lenz's law state about the direction of the induced EMF?
it will oppose the change in magnetic flux that produced it
it will be perpendicular to the change in magnetic flux
it will be in the same direction as the change in magnetic flux
it will have no relation to the change in magnetic flux
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What does the minus sign in Faraday's law indicate about the nature of the induced EMF?
it is independent of the change causing it
it resists the change causing it
it amplifies the change causing it
it has no effect on the change causing it
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In a coil experiencing an increasing magnetic field, what kind of magnetic field does the induced current create?
A perpendicular magnetic field
an opposing magnetic field
no magnetic field
an aiding magnetic field
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What determines the direction of the induced current in a coil?
the material of the coil
whether the magnetic field strength is increasing or decreasing
the size of the coil
the number of turns in the coil
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What is the primary consequence of Lenz's law in electromagnetic induction?
it determines the magnitude of the induced EMF
it determines the direction of the induced EMF and current
it determines the duration of the induced EMF
it determines the frequency of the induced EMF
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Describe how Lenz's law affects the motion of a conducting rod moving through a magnetic field.
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What is the significance of Lenz's law in the context of electromagnetic induction?
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A coil with 200 turns experiences a change in magnetic flux from 0 to 0.05 Wb in 2 seconds. Calculate the magnitude of the induced EMF in the coil.
-5 V
-10 V
-2 V
-20 V
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When the magnetic field inside a 500-turn coil increases at a rate of 0.04 Wb s-1, what is the magnitude of the induced EMF in the coil?
-40 V
-10 V
-20 V
-5 V
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If a coil is removed from a magnetic field at a rate that changes its flux by -0.02 Wb over 4 seconds, and the coil has 100 turns, what is the induced EMF?
-0.05 V
-0.5 V
0.05 V
0.5 V
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