A) \[{{50}^{o}}C\]
B) \[{{60}^{o}}C\]
C) \[{{70}^{o}}C\]
D) \[{{80}^{o}}C\]
Correct Answer: D
Solution :
Use \[{{R}_{t}}={{R}_{0}}(1+\alpha t)\] Here \[20={{R}_{0}}(1+20\alpha )\] \[60{{R}_{0}}(1+500\alpha )\] Here \[{{R}_{t}}=25\Omega \] On solving, we find\[t={{80}^{o}}C\]You need to login to perform this action.
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