A) \[4.9\,\,\times \,\,{{10}^{3}}\,amp\]
B) \[1.78\times {{10}^{3}}\,amp\]
C) \[5.3\times {{10}^{4}}\,amp\]
D) \[10.69\times {{10}^{6}}\,amp\]
Correct Answer: D
Solution :
\[Volume\text{ }of\text{ }coating\text{ }=\text{ }Area\,\,\times \,\,thickness\] \[=\text{ }32\,\,\times \,\,{{10}^{4}}\times \,\,0.025\] \[=\text{ }8000\text{ }c{{m}^{3}}\] \[mass=volume\text{ }\times \text{ }density\] \[=\text{ }8000\,\,\times \,\,7.2\] \[=\text{ }57600\text{ }gm\] \[w=\frac{ItE}{96500}\] \[57600\,\,=\,\,\frac{I\times 60\times (52/6)}{96500}\] \[I\,\,=\,\,10.69\,\,\times {{10}^{6}}\,Amp\]You need to login to perform this action.
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