A) \[{{R}_{t}}={{R}_{0}}(1+\alpha t)\]
B) \[{{R}_{t}}={{R}_{0}}(1-\alpha t)\]
C) \[{{R}_{t}}=R_{0}^{2}(1+\alpha t)\]
D) \[{{R}_{t}}=R_{0}^{2}(1-\alpha t)\]
Correct Answer: A
Solution :
By the definition resistance temperature coefficient \[(\alpha )\] Relation between resistance at \[t{{\,}^{o}}C\]and \[0{{\,}^{o}}C\]is \[{{R}_{t}}={{R}_{0}}(1+\alpha t)\]
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