A) \[28{}^\circ C\]
B) \[48{}^\circ C\]
C) \[52{}^\circ C\]
D) \[68{}^\circ C\]
E) \[72{}^\circ C\]
Correct Answer: D
Solution :
\[{{i}^{2}}Rt=ms\Delta t\] \[\Rightarrow \]\[{{(4)}^{2}}\times 7\times 3\times 60=0.1\times 4.2\times {{10}^{3}}\] \[\times [T-(20{}^\circ +273)]\] \[T=341K=68{}^\circ C\]You need to login to perform this action.
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