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Cambridge IGCSE Combined Science practice

If a conductor's length is halved and its cross-sectional area is doubled, what happens to its resistance?

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Show answerElectrical quantities revisionRevise the key idea

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MCQ

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cambridge_mcq

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Electrical quantities

Exam-style question

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If a conductor's length is halved and its cross-sectional area is doubled, what happens to its resistance?.

  1. A.It remains the same
  2. B.It doubles
  3. C.It halves
  4. D.It quadruples

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Paper 4 structured question: Electrical quantities

Paper 4Theory (Extended)2 marks

Description

Resistance of Wires

The student measures the resistance of both wires and records the results. Wire A has a resistance of 4 ohms, while Wire B has a resistance of 8 ohms.

  1. a

    Compare the resistances of Wire A and Wire B based on their lengths and cross-sectional areas.

    Aim for approximately 2 distinct marking points.

    [2]