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4.2.4a Resistance

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Question 42

A metal wire has a uniform circular cross-section of diameter d d\,d and length LLL. Which statement correctly describes the relationship between its electrical resistance R R\,R and its dimensions?

A

RRR is directly proportional to its length and inversely proportional to its diameter.

B

RRR is directly proportional to the square of its length and inversely proportional to its diameter.

C

RRR is directly proportional to its length and inversely proportional to the square of its diameter.

D

RRR is inversely proportional to its length and directly proportional to the square of its diameter.

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4.2.4a Resistance Questions

  1. IGCSE
  2. /Physics
  3. /4.2.4a Resistance

132 exam-style questions on CIE IGCSE Physics 4.2.4a Resistance. Each one has a worked solution and a mark scheme showing where the marks go.

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