A) 250 Wb
B) 275 Wb
C) 200 Wb
D) 225 Wb
Correct Answer: A
Solution :
[a] According to Faraday's law of electromagnetic induction, \[\varepsilon =\frac{d\phi }{dt}\] Also, \[\varepsilon =iR\] \[\therefore \,\,\,\,iR=\frac{d\phi }{dt}\Rightarrow \int{d\phi =R\int{idt}}\] Magnitude of change in flux \[(d\phi )=R\times area\]under current vs time graph or \[d\phi =100\times \frac{1}{2}\times \frac{1}{2}\times 10=250\,Wb\]You need to login to perform this action.
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