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# Direction of EMF 2

APPHEM-VWUECY

A solenoid is hooked up to a battery and a switch as shown in the figure below.

In the moments just after the switch is opened, what direction is the emf of the solenoid coil?

A

Location $A$ positive and Location $B$ negative.

B

Location $A$ is positive and Location $B$ positive.

C

Location $A$ is negative Location $B$ is negative.

D

Location $A$ is negative Location $B$ is positive.

E

No emf voltage is produced in the solenoid coil.