The discussion revolves around the concept of induced electromotive force (e.m.f) in circuits, particularly in relation to switching the circuit on and off. Participants explore the relationship between the rate of change of magnetic flux and the induced e.m.f.
Some participants acknowledge the original poster's understanding while providing additional insights about the limitations of inducing current through switching. There seems to be a shared exploration of the topic, with no explicit consensus reached.
Participants mention that the induced e.m.f might be very small in certain circuits and discuss the practical limitations of switching speed and coil effectiveness.
thank you :DTSny said:Hello, and welcome to PF!
Yes, you are right. For some circuits, the induced emf might be very small.
Noctisdark said:You can, but a poor way of inducing current, you can't switch very fast and the coil in your circuit won't make it so perfect, you end up with few milli volts !