Electromagnetic Induction & Alternating Currents (NEST (National Entrance Screening Test) Physics): Questions 1 - 1 of 3
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Question number: 1
» Electromagnetic Induction & Alternating Currents » Induced EMF and Current
Appeared in Year: 2007
Question
A flexible conducting wire of rectangular shape of sides and , lies in the plane. There is a uniform magnetic field along the . The wire is deformed continuously in the same plane from shape to another rectangular shape of sides and . Let denote the magnetic flux through the loop. Then, independent of how the loop is deformed –
Wire Loops in Magnetic Field
In figure, a flexible conducting wire of rectangular shape of sides a and b lies in xy plane.
Choices
Choice (4) | Response | |
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a. | is constant throughout the process. |
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b. | There is no heat generated in the entire process. |
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c. | The net charge flowing through the wire in the entire process is zero. |
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d. | Since , there is no induced emf in the wire at any time. |
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