A) 0.4 m
B) 4 m
C) 0.8 m
D) 8 m
Correct Answer: D
Solution :
\[E=\frac{e}{(R+{{R}_{h}}+r)}.\frac{R}{L}\times l\]Þ \[0.4=\frac{5}{(5+45+0)}\times \frac{5}{10}\times l\] Þ l = 8 mYou need to login to perform this action.
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