A) 5 min 20 s
B) 6 min 42 s
C) 4 min 40 s
D) 5 min 50 s
E) 6 min
Correct Answer: B
Solution :
\[M=\frac{E}{F}it\] \[\Rightarrow \] \[t=\frac{MF}{Ei}=\frac{20\times {{10}^{-3}}\times 96500}{32\times 0.15}\] \[=6\text{ }min\text{ }42\text{ }s\]
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