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Cambridge IGCSE Physics practice

Paper 3 structured question: Electric current

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Electric current

Exam-style question

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Paper 3Theory (Core)1 marks

Understanding electrical currents is essential in physics.

Description

Types of Electric Current

There are two main types of electric current: direct current (D.C.) and alternating current (A.C.). D.C. flows in one direction, while A.C. changes direction periodically.

  1. a

    State the main difference between D.C. and A.C.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Electric current

Paper 3Theory (Core)2 marks

Description

Electric Current Types

Direct current (D.C.) is used in batteries, while alternating current (A.C.) is used in power supplies.

  1. a

    State one application of D.C. and one application of A.C.

    Aim for approximately 2 distinct marking points.

    [2]