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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?
A
Clockwise
B
There will be no current.
C
Counterclockwise
Verified step by step guidance
1
Identify the direction of the magnetic field. In the image, the magnetic field is directed into the page, as indicated by the 'X' symbols.
Apply Faraday's Law of Electromagnetic Induction, which states that a change in magnetic flux through a loop induces an electromotive force (EMF) in the loop.
Determine the change in magnetic flux. As the triangle is pushed to the left, more of it enters the magnetic field, increasing the magnetic flux through the triangle.
Use Lenz's Law to determine the direction of the induced current. Lenz's Law states that the induced current will flow in a direction that opposes the change in magnetic flux. Since the flux is increasing, the induced current will create a magnetic field opposing the increase.
Conclude the direction of the induced current. To oppose the increase in flux, the induced current must flow in a counterclockwise direction, creating a magnetic field out of the page to counteract the increase in the field into the page.