The magnetic flux developed around the coil being proportional to the amount of current flowing in the coils windings as shown. If additional layers of wire
The induced emf produces a current that opposes the change in flux, because a change in flux means a change in energy. Energy can enter or leave, but not
This expression is valid, but it does not give EMF as a function of time. To find the time dependence of EMF, we assume the coil rotates at a constant angular
One experiment Faraday did to demonstrate magnetic induction was to move a bar magnet through a wire coil and measure the resulting electric current through
Do not leave the hob unattended whilst it is being used. Please note that the heating up time on an induction hob is very much shorter than on a conventional
