Changing Field as a Function of Time

The animation shows the top view of a four wire conducing loop and a galvanometer.  Current flowing into the + terminal, i.e., counterclockwise in the loop, will deflect the meter to the right.   Plot the magnetic field passing through the loop during the time interval t=0 to t=10.  Assume the field is zero at t=0.    Start.

Drag the wire on the right hand side to a new position.  How does this change the galvanometer reading?