The current i in a coil varies with time as s | vedclass

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(D) The induced $emf$ $(\varepsilon)$ in a coil is given by the formula $\varepsilon = -L \frac{di}{dt}$, where $L$ is the self-inductance of the coil

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(D) The induced $emf$ $(\varepsilon)$ in a coil is given by the formula $\varepsilon = -L \frac{di}{dt}$, where $L$ is the self-inductance of the coil and $\frac{di}{dt}$ is the rate of change of current.$1$. For the interval $0 $2$. For the interval $\frac{T}{4} $3$. For the interval $\frac{T}{2} Comparing this with the given graphs, the graph in option $D$ correctly represents a negative constant $emf$ for $0 < t < \frac{T}{4}$, zero $emf$ for $\frac{T}{4} < t < \frac{T}{2}$, and a positive constant $emf$ for $\frac{T}{2} < t < \frac{3T}{4}$.

The current $i$ in a coil varies with time as shown in the figure. The variation of induced $emf$ with time would be:

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