Find your Poles!

We know that solenoids act as bar magnets if electric current passes through it. If current is allowed to flow in the above given solenoid (in the direction as shown), which pole would the left side of the solenoid act like?

South Cannot be determined North North and South(keeps changing)

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2 solutions

Sravanth C.
Mar 30, 2016

According to the clock rule , we have:

When electric current enters the solenoid, the direction in which it travels determines the polarity. If it travels a clockwise loop it is South pole, and if it travels an anti-clockwise loop it is a North pole.

Here, we can clearly observe that the electric charge enters in an clockwise loop so the right end would be the north pole, and thus the polarity on the left end would inadvertently be North .

Ayush Maurya
Apr 7, 2016

clock rule, says that if electric current enters the solenoid, the direction in which it travels determines the polarity. If it travels a clockwise loop it is South pole, and if it travels an anti-clockwise loop it is a North pole. Here, we can clearly observe that the electric charge enters in an clockwise loop so the right end would be the north pole, and thus the polarity on the left end would inadvertently be North.

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