Experiment: EMF from Moving Wires in a Magnetic Field

[alva]

The attached drawing represents 4 wires. The top and down are still. The right and left move with the same velocity v as shown by the arrows.

There is a magnetic field perpendicular to the page.

Will there be a current flowing through the circuit formed by the 4 wires?

 

[alva]

The drawing is here, I expect.

View attachment loop.bmp

 

[Dale]

Yes. Each will get an EMF in the opposite direction, leading to a current loop.

 

[Philip Wood]

Another way of looking at it is that the area of the circuit is shrinking, and so, therefore, is the magnetic flux, B.A, linking the circuit.