The back face of a circular loop of wire is found to be south magnetic pole. The direction of the current in this face of the circular loop of wire will be: 

In the straight wire $A$, a current is flowing in the vertically downward direction whereas in wire $B$, the current is flowing in the vertically upward direction. What is the direction of the magnetic field in wire $A$?

(Choose from the following: Clockwise/ Anti-clockwise)

The figure shows a solenoid wound on a core of soft iron. Will the end A be a N pole or S pole when the current flows in the direction shown? 

For the coil in the diagram below, when the switch is pressed, what is the polarity of end A? (North Pole, South Pole)