-In the figure,two solenoids are side by side.The switch S,initially open,is closed.The induced current through the resistor R is:
A)zero
B)from a to b
C)from b to a

Question

-In the figure,two solenoids are side by side.The switch S,initially open,is closed.The induced current through the resistor R is:
A)zero 
B)from a to b 
C)from b to a

Quizplus · Accepted Answer

When the switch S is closed, the current in the first solenoid changes, inducing an electromotive force (EMF) in the second solenoid. According to Lenz's law, the induced current will flow in a direction that opposes the change in magnetic flux, which in this case is from b to a through the resistor R.

-In the Figure,two Solenoids Are Side by Side