A) 9.3
B) 19.3
C) 38.3
D) 39.5
Correct Answer: B
Solution :
\[{{W}_{metal}}=\frac{Eit}{96500}\] \[=\frac{E\times 3\times 50\times 60}{96500}\] \[E=\frac{96500\times w}{3\times 50\times 60}\] \[E=\frac{96500\times 1.8}{3\times 50\times 60}=19.3\]
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