A small coil of wire is situated in a non-uniform magnetic field. The coil consists of 40 turns of wire and moves with a constant speed in a straight line. The coil has displacement x from a fixed point P. The variation with x of the magnetic flux in the coil is shown in the first graph.
Sketch the variation with x of the e.m.f E induced in the coil for values of x from x=0 to x=6.0 cm.
E = (delta N*flux) / delta t
The Attempt at a Solution
I know the slope of the flux vs. x graph is the emf so in the region where the flux vs. x graph has a negative yet constant slope, I drew a horizontal line in the negative region for the emf vs x graph. And the region where the flux vs x graph has a positive slope, I drew a horizontal line in the positive region for the emf vs x graph.
I'm confused as to what happens at point 3? Will the emf vs x graph be vertical as I drew it (second graph)?