A) \[{{28}^{o}}C\]
B) \[{{48}^{o}}C\]
C) \[{{52}^{o}}C\]
D) \[{{68}^{o}}C\]
Correct Answer: D
Solution :
\[{{i}^{2}}RT=ms\Delta T\] \[{{(4)}^{2}}\times 7\times 3\,\times 60=0.1\,\times 4.2\,\times {{10}^{3}}\,\times [T-(20+273)]\] \[T=341\,K={{68}^{0}}C\]You need to login to perform this action.
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