Flux Linkage Change
Suppose a cylindrical coil is moved back and forth so that it's axis remains parallel to the magnetic field lines. Since a wire cutting across a magnetic field produces emf, to find the total emf produced across the coil, we should first find the total length of the wire and the cross section area of the *wire* right? But my textbook instead states that the emf depends on the cross section area of the *coil*. Why is this the case?
(edited 5 years ago)
I think along the lines of an A level answer:
"induced emf is proportional to rate of change of magnetic flux linkage"
so that depends on BA, where A is the c/s area of the coil, nothing to do with the dimensions of the wire making the coil.
(B is the strength of the magnet)
Hope that helps.
"induced emf is proportional to rate of change of magnetic flux linkage"
so that depends on BA, where A is the c/s area of the coil, nothing to do with the dimensions of the wire making the coil.
(B is the strength of the magnet)
Hope that helps.
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