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Exam-style practice

Electrical safety answer explanations

Review worked answers and explanations for Electrical safety. Aligned to Cambridge IGCSE Combined Science.

Answer explanations

Question 1 of 8

Review the answer support, then move sideways through the set.

Paper 3 structured question: Electrical safety

Paper 3Theory (Core)3 marks

Description

Heat Generation in Conductors

When electric current flows through a conductor, it encounters resistance, which generates heat. This phenomenon is described by Joule's law.

  1. a

    Explain how electric current generates heat in a conductor.

    [3]