While the background physics is relatively complex, this law serves to ensure the conservation of energy when dealing with changing current. 

6.0.1 A square loop of wire (side a) lies on a table, a distance s from a very long straight wire, which carries current I, as shown below.

6.0.1.1 Find the flux through the loop.

6.0.1.2 If someone now pulls the loop directly away from the wire, at speed v, what emf is generated, and in what direction does the current flow?
6.0.1.3 What if the loop is pulled to the right at speed v, instead of away?