Describe a smiple experiment (or activity) to show that the polarity of emf induced in a coil is always such that it tends to prduce a current which oppose the change of magnetic flux that produce it

(a) Describe a simple experiment (or activity) to show that the polarity of emf induced in a coil is always such that it tends to produce a current which opposes the change of magnetic flux that produces it. (b) The current flowing through an inductor of self inductance L is continuously increasing. Plot a graph showing the variation of (i) Magnetic flux versus the current (ii) Induced emf versus dI/Dt (iii) Magnetic potential energy stored versus the current.

Describe two simple experiments to show that currents are induced by currents

Does the change in magnetic flux always produce both emf and current?

To induce an e.m.f. in a coil, the linking magnetic flux

The circulating induced current produced in a metal plate due to the change in magnetic flux are