In the Figure,two Parallel Wires Carry Currents of Magnitude I

Multiple Choice

In the figure,two parallel wires carry currents of magnitude I in opposite directions.A rectangular loop is midway between the wires.The current I is decreasing with time.The induced current through the resistor R is

A) from a to b.
B) from b to a.
C) There is no induced current through the resistor.