Starting outside the region with the magnetic field, a single square coil of wir

Question

Starting outside the region with the magnetic field, a single square coil of wire moves across the region with a uniform magnetic field B perpendicular to the page. The loop moves at constant velocity V. As seen from above, a counterelockwise emf is regarded as positive. Roger claims that the graph shown below represents the induced emf. Martin says he's wrong. In which direction did the loop move over the plane of the page, or is Martin correct? emf a. Roger is correct: the loop moved from bottom to top ob. Roger is correct: the loop moved from top to bottom. O c. Roger is correct: the loop moved fron left to right. d. Roger is correct: the loop moved from right to left. e. Martin is correct: none of these directions of motion will produce the graph of emf vs t

Explanation / Answer

the induced emfis always opposite to the cause according to the Lenz's Law. so that the roger statement is correct and the loop is moved from top to bottom in a constant magnetic field .

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