Why is the emf produced in the displayed direction?

Asked by  | 15th Jul, 2011, 12:38: AM

Expert Answer:

When conductor PQ is moved towards left with a constant velocity, the area enclosed by the loop PQRS decreases; hence, magnetic flux linked with it decreases. According to Lenz's law, the direction of induced current must be along PQRS as shown below:
 
                   

Answered by  | 18th Jul, 2011, 11:53: AM

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