NEET UG 2020 · Physics · Question 163
NEET 2020 Physics, question 163
Question 163 of the NEET 2020 paper (code E1) is a Physics question from Current Electricity. Its idea, Resistivity vs Temperature Graphs, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q163 · Physics
Which of the following graph represents the variation of resistivity () with temperature (T) for copper ?
The figure, described in words
Four rho-vs-T sketches: (1) rising straight line with positive intercept, (2) falling concave-up curve, (3) rising concave-up curve from a non-zero value, (4) falling concave-down curve.
- 1[graph: vs T, straight line with positive slope and non-zero intercept]
- 2[graph: vs T, decreasing curve, concave up]
- 3[graph: vs T, increasing curve, concave up, starting from non-zero ]Official answer
- 4[graph: vs T, decreasing curve, concave down]
Official answer: option 3 · NTA final answer key
Same idea
The only question on Resistivity vs Temperature Graphs
No other NEET paper from 2017–2026 tested this exact idea.
Resistivity vs Temperature Graphs: every question and how it was framed
The chapter
Current Electricity in ten years of NEET
34 questions from 2017–2026, asked in 10 of 10 papers, about 3.2 a paper. Ohm's Law and Resistance alone had 28.