A) \[16{}^\circ C\]
B) \[10{}^\circ C\]
C) \[20{}^\circ C\]
D) \[12{}^\circ C\]
Correct Answer: C
Solution :
Since \[H\propto {{i}^{2}},\] so on doubling the current, the heat produced and hence the rise in temperature becomes four times.
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