Since this experiment will be counted in the public exam, I cannot post it on the internet.
Would you mind if you give me your email address so that I can send you my graphs?
I have just done an experiment on finding the reactance of (a)an air-core inductor and (b)an inductor with a soft-iron core.
I have plotted a graph of Vrms against Irms for each experiment.
For the graph in (a), the straight line can pass through origin; yet, for the graph in (b), the straight...
For inductors, it is the induced e.m.f. which resists the current flow.
However, I don't quite understand how capacitors resist the current flow.
Why is there capacitive reactance?
What does 'A built-up electric field resists the change of voltage on the element' mean?