Faraday's experiment (1 Viewer)

[xeriphic]

Faraday discovered that a changing magnetic field could generate an electric current. This changing magnetic field was provided by a moving magnet. Faraday discovered electromagnetic induction induction; in which electrical energy (emf and/or electric current) could be produced through the use of a magnetic field. Faraday achieved this by attaching two wires through a sliding contact to a copper disc. When the disc was rotated between the poles of a horseshoe magnet, a continuous flow of direct current was produced.

I was wondering does anyone have an image which shows Faraday's experiment on electromagnetic induction, since all I could find were the one involving wire around the iron ring, also anyone know which was the experiment he did

the iron ring or the copper disk, thanks












also for the factors which will increase the induced voltage thus the rate of change of magnetic flux, if the distance between the conductor and the magnetic field is decreased, as the flux lines are closer together nearer the magnet so the rate increases, but the area is decreased and referring to the formula of Faraday's law, the induced current increases with increasing area, so how does this explain






why does the speed of the coil increase when the back emf is induced

please if anyone could reply asap

 

[acmilan]

why does the speed of the coil increase when the back emf is induced

Do you mean why does the amount of emf induced increase when the speed of the magnet through the coil increases?

 

[xeriphic]

hmm I think I interpret it wrongly when I read it before, isn't it because of the emf is inversely proportional to the change in time thus increase in speed cuts the flux at a quick rate which result in larger back emf