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Cambridge IGCSE Physics practice

Paper 3 structured question: Series and parallel circuits

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Series and parallel circuits

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Paper 3Theory (Core)2 marks

Analyzing the effects of resistance in a parallel circuit.

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Resistance in Parallel Circuits

In a parallel circuit, one branch has a resistance of 4Ω and another has a resistance of 2Ω. Explain which branch will carry more current and why.

  1. a

    State which branch carries more current and provide a reason.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Series and parallel circuits

Paper 3Theory (Core)1 marks

Description

Parallel Circuit Analysis

In a parallel circuit with three branches, the currents are measured as follows: Branch 1 has a current of 2A, Branch 2 has a current of 3A, and Branch 3 has a current of 1A. Calculate the total current supplied by the source.

  1. a

    State the total current supplied by the source.

    Aim for approximately 1 distinct marking point.

    [1]