1.

For the coil in the diagram below, when the switch is pressed :(a) what is the polarity of end A ?(b) which way will the compass point then ?

Answer»

(a) End A becomes S-pole because current flows in clockwise direction at A. 

(b) When A becomes S-pole, the other end becomes N-pole. So the tip of the compass (with also has North polarity) moves away from this end i.e., tip moves towards right.



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