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30. Induction and Inductance

Lenz's Law

30. Induction and Inductance

Lenz's Law

Multiple Choice

If the metal triangle shown in the figure is pushed to the left, farther into the magnetic field, what is the direction of the induced current in the triangle?
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Multiple Choice
According to Lenz’s Law, the direction of the induced magnetic field in a conductor is such that it
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Multiple Choice
According to Lenz's Law, if the magnetic flux $Φ$ through a conducting loop is increasing into the page, what is the direction of the induced current in the loop as viewed from above?
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Multiple Choice
An outer ring is connected to a variable voltage source. If the battery's voltage is continuously INCREASING, what is the direction of the induced current in the inner ring, centered inside of the outer ring?
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Multiple Choice
What emf is created in a $1 . 3 m$ long conductor moving at $45 m/s$ in a $3.0 mT$ magnetic field? Assume the conductor's velocity is perpendicular to the field.
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Multiple Choice
In a region of space, a magnetic field is increasing at $3 T / s$ . A square loop of wire with a side of $12 cm$ is oriented perpendicular to the field. The loop has a total resistance of $0.02 Ω$ . What current is induced in the loop?
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