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Help with this Q! (1 Viewer)

shehan123

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If i gave you a magnetic flux vs time graph as a positive cosine non phase shifted function, that is its initially at a maximum. What is the induced emf graph?
 

ishan

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a negative sine function without any phase shift ie.y=-sinx, same amplitudes and period as the flux graph.
 
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shehan123

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a negative sine function without any phase shift ie.y=-sinx, same amplitudes and period as the flux graph.
Why is it not a positive sin non phase shift?, given that faradays law is (- n (change in flux) )
 

ishan

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my mistake you are right, i forgot when u differentiate cosine you get -sine. and then the -n makes it a positive sin no phase shift
 

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