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Physics · May / June 2016 · Paper 11 · Question 32

5054Resistance

The graph is the voltage-current graph for two resistance wires P and Q. The wires are made from the same material and have equal lengths. The resistances of the wires and their cross-sectional areas are different. Which wire has the greater resistance and which wire has the larger cross-sectional area?

  1. Agreater resistance: P; larger cross-sectional area: P
  2. Bgreater resistance: P; larger cross-sectional area: Q
  3. Cgreater resistance: Q; larger cross-sectional area: P
  4. Dgreater resistance: Q; larger cross-sectional area: Q

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Correct answer: B. greater resistance: P; larger cross-sectional area: Q

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