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Mathematical relationship between the induced e.m.f and the network
Faraday noted that the e.m.f induced in a loop is proportional to the rate of change of magnetic flux by it:
Where; e is the electromotive force induced (in volts)
N is the number of turns of the coil
dΦ is the change of flux in Weber, Wb
dt is the time taken for the flux to change in seconds.
*Notice the negative sign is the induced current will now form an induced magnetic field. The direction of that magnetic field will be conflicting to the direction the flux is changing.
The creation of a magnetic field in a ring may need to be accessed by means of an air gap. This is typically used to apply the magnetic field to a current carrying conductor to pro
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