Question
Graph between magnetic flux $\phi$ and electric current $I$ for two inductors $A$ and $B$ is given in the figure. The magnitude of self-inductance will be more for whom?
Image

Answer

Since $\phi= LI \Rightarrow L =\phi / I$ and $\phi= LI \Rightarrow \phi \propto I$
Hence there is a linear graph between $\phi$ and $I$ and slope of $\phi / I$ will represent the self-inductance of the inductor. The slope of A is more than as compared to that of B , so selfinductance of A will be more.

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