Power Generation

The diagram shows a flexible loop of wire between the poles of an electromagnet which provides a uniform field B in the region of the loop. At time t = 0, the current through the electromagnet is turned off, and the field B then falls to zero at time t1 as shown.

Draw a diagram to represent the EMF across the ends of the loop as a function of time.

http://www.animations.physics.unsw.edu.au/jw/electricmotors.html#mandg

http://www.physics.org/explorelink.asp?id=3082&q=ac&currentpage=1&age=0&knowledge=0&item=5