Lets say there's a bar magnet going at a speed V (North pole first) through the central axis of symmetry of the circular coil.
Sketch the graph of the graph of the magnetic flux through the circular loop as a function of time. Also sketch the graph of the corresponding emf as a function of...
a) State Faraday’s law of electromagnetic induction.
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b) A coil of 1000 turns, resistance 23.0 ohms and cross-sectional area of 4.0 cm squared is positioned perpendicular to a magnetic field which is switched off in 0.005 s.
I) What is the average induced e.m.f. if the magnetic flux...
If you move a straight wire down through a magnet field, an emf is induced in the wire. If you then stop moving the wire, does the emf remain or does it disappear i.e do the electrons flow back? What about if you moved the wire out of the field?