Lenz's Law Video Lessons

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Problem: What is the direction of the induced current in the circular loop due to the current shown in each part of Fig. 21-10? 

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Lenz law is used to determine the direction of the induced current.

According to Lenz law, the induced current due to change in flux is in the direction such that it produces a magnetic field opposing the original change in flux.

(a)

In a, the current is increasing, which will cause an increase in the field.

The direction of the increasing current is also to the left of the loop, which gives the direction of the field to be out of the page through the loop. 

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Problem Details

What is the direction of the induced current in the circular loop due to the current shown in each part of Fig. 21-10? 

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