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EMI(Electro Magnetic Induction)
Sir, my doubt is still not clear.I raised my doubt for point wise clarification (ESPECIALLY point no. 3)as under:
1.lets come to motional emf concept first which states that when a rod moving with velocity v in a uniform B perpendicular to it then rod produces motional emf =Blv.(Agreed/Not Agreed)
2. Now some R with connecting wires is connected across rod & rod moves same like point no 1 above, it should produce emf =Blv as per motional emf concept.(Agreed/Not Agreed)
3. But Faraday law states that emf is produced only when there is change in B/A/angle. In point no 2 above there is no change in B/A/angle, then as per Faraday law there should not be any emf but as per motional emf concept & point no. 1/2 above the emf equivalent to a battery=Blv is produced. So both contradicting, please clarify.
The doubt was relied as under:
3 In case of point 2 area of the loop is changing so fluxes will change. Thats why emf induces
But in point no 2, the complete frame ie rod connected across R is moving continuously with speed v in uniform B (consider it in mid of B only while moving, not enter/exit) then rod should produce emf =Blv as per motional emf concept ie current=Blv/R will flow thru ckt/frame But as per as per Faraday law there should not be any emf because no change in area as whole frame/ckt is in B only(consider it in mid of B only while moving, not enter/exit)
why both are contradicting, pl explain now.