A) 0.15 s
B) 0.3 s
C) 0.05 s
D) 0.1 s
Correct Answer: D
Solution :
\[i={{i}_{0}}\left( 1-{{e}^{\frac{-Rt}{L}}} \right)\] Þ For \[i=\frac{{{i}_{0}}}{2}\], \[t=0.693\frac{L}{R}\] Þ \[t=0.693\times \frac{300\times {{10}^{-3}}}{2}=0.1\,sec\]You need to login to perform this action.
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