Direction of current in a magnetic field when loop is square

[vizakenjack]

Homework Statement

A flexible wire loop has a radius of r = 0.178 m and it is inside a uniform magnetic field of B = 0.332 T. The loop is grasped at points P and Q and stretched until its area is zero. It takes 0.146 s to close the loop.

Homework Equations

EMF = ∆Phi/∆t
Phi = magnetic flux

The Attempt at a Solution

Used the formula above.So where is current induced? In the wire? Due to the change in magnetic field then? Or magnetic flux? How do I find its direction... I mean, I know if you have magnetic field, then you use right hand rule, right? Anyway, how do I find direction here?

 

[andrevdh]

The same thing happens when a loop rotates in a magnetic field - the exposed area to the constant magnetic field changes, although the amount of turns in the coil stays the same.