Engineering Board Exam Reviewer · Physics · hard
A copper wire has a resistance of 10 at 20 °C. What is its resistance at 80 ° C? ( = 0.0039 /° C)
- 2.340
- 13.120
- 12.340
- 8.104
Answer
C. 12.340
Solution
R = R0[1 + (T - T0)] = 10[1 + 0.0039(60)] = 12.340 .
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