Question

The direction of current flowing in the coil of an electromagnet at its two ends X and Y are as shown below:  

  

 What is the polarity of end X?

What is the polarity of end Y?   

Name and state the rule which you have used to determine the polarities. 

Answer 1

 The polarity of end X is south because current is flowing in clockwise direction at this end. 

 The polarity of end Y is north because current is flowing in anticlockwise direction at this end.

We have used clock face rule to determine the polarities.