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lenz and farady law

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A bar magnet is moved between two circular coils A and B with a constant velocity v . We have to find , what will happen to two coils .

According to they should attract each other . As same side of coil act as a magnet with opposite polarity . Am I correct , if not why ?

asked Nov 13, 2016 in Physics Problems by koolman (4,236 points)
The induced current will be in the same direction for both coils. Therefore by Ampere's Law the will attract
Why the induced current is in same direction.
According to whom should they attract, koolman? What is your reasoning. I think you are still required to show some effort even on this site!
As magnet is moving towards B , the induced current should be in anticlockwise (act as north pole) to oppose the increase in magnetic flux . And same for coil A it should be clockwise( act as south pole ) to oppose decrease in magnetic flux
Your reasoning and conclusion are correct. That was my up-vote to your last comment. Using clockwise/anticlockwise is ambiguous because you haven't identified in which direction these are being measured. But you are correct about the induced magnetic poles, which are such as to oppose the change in magnetic flux linkage.
So will they attract each other

1 Answer

3 votes
 
Best answer

As magnet is moving towards B , the induced current should be in anticlockwise (act as north pole) to oppose the increase in magnetic flux . And same for coil A it should be clockwise( act as south pole ) to oppose decrease in magnetic flux

answered Nov 16, 2016 by koolman (4,236 points)
Nice solution
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