Which one of the following graph shows the variations of voltage in the coil?
A)
B)
C)
D)
Correct Answer: B
Solution :
\[e=-\frac{d\phi }{dt}\,=\,-L\,\frac{dI}{dt}\] \[\Rightarrow \,\,\left| e \right|\,\,=\,\,\frac{d\phi }{dt}\,\,=\,\,L\,\,\frac{dI}{dt}\,\,=\,\,L\,(slope\,\,of\,\,curve)\,\]
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