Question

A single loop of wire of resistance R is in the form of a rectangle of...

A single loop of wire of resistance R is in the form of a rectangle of width w and length L, and its plane is perpendicular to a uniform magnetic field of magnitude B. If the rectangular loop is turned over (that is, it is rotated 180o about one of its sides) in time Δt, how much total electric charge ΔQ will flow through any given cross-section of the wire?          

Homework Answers

Answer #1

Area vector (A)​​​​​​ is perpendicular to plane of loop. Hence initially A is parallel to magnetic field (B)

Magnetic flux is given by

Initial flux

  

Final flux

  

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