NEET 2023 Phase 1 · PhysicsR vs tempPrevious Year Question
The resistance of a platinum wire is 2 at 0C and 6.8 at 80C. The temperature coefficient of resistance is:
Answer: (C) 310 C. \textbf{Answer:} (3) 310 C \textbf{Solution:} = (R-R)/(RT) = (6.8-2)/(280) = 4.8/160 = 0.03 = 310 C.
- A.310 C
- B.310 C
- C.310 C✓
- D.310 C
Correct Answer
(C) 310 C
Solution & Explanation
\textbf{Answer:} (3) 310 C \textbf{Solution:} = (R-R)/(RT) = (6.8-2)/(280) = 4.8/160 = 0.03 = 310 C.
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