A) \[0.8\] henry
B) \[0.4\] henry
C) \[0.2\] henry
D) none of these
Correct Answer: C
Solution :
Here: Emf \[E=8\]volt Time \[t=0.05\text{ }sec\]. initial current \[{{i}_{1}}=2\] amp \[\Rightarrow \] final current \[{{i}_{2}}=4\] amp From the Faraday's law of electromagnetic induction, the induced emf is given by \[E=-L\frac{di}{dt}\] \[\Rightarrow \] \[S=-L\,\frac{di}{dt}\] \[\Rightarrow \] \[L=-8\frac{dt}{di}=-8\frac{dt}{({{i}_{1}}-{{i}_{2}})}\] \[=-8\times \frac{0.05}{2-4}=0.2\] henry.You need to login to perform this action.
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