The circular wire loop shown in the figure is connected to a simple circuit composed of a resistor R in series with a current meter. The time-varying magnetic flux linking the surface of the loop induces a V emf , and hence a current through R. The purpose of this demo is to illustrate in the form of a slow-motion video how the current I varies with time, in both magnitude and direction, when B(t) =B 0 cos t .
[Note that I(t) is a maximum when the slope of B(t) is a maximum, which occurs when B itself is zero!]
Proceed to Demo 6.2
