 #1
Guillem_dlc
 184
 15
 Homework Statement:

Two metallic bars of the same length move on two very long rails, also conductive, with velocities ##v_1## and ##v_2## within a constant magnetic field perpendicular to the plane of the paper and directed inward. We can affirm that:
a) If ##v_1=v_2##, no current will flow through the circuit.
b) If ##v_1>v_2##, a clockwise current will flow through the circuit.
c) If ##v_1<v_2##, a counterclockwise current will flow through the circuit.
d) As the field does not vary with time, the circuit will not flow current in any case.
 Relevant Equations:
 Faraday Law
I know the correct answer is a), but I have no idea how to approach the exercise. If you could give me any hints/ideas I would appreciate it.