CAIE IGCSE Physics 4.2.2.2 Use of Ammeters Analogue and Digital Questions

Use CAIE IGCSE Physics circuit questions to place ammeters in the branch being measured and explain why a large, brief current is unsuitable for a laboratory meter.

Exam points

Connect an ammeter in series with the lamp, LED or resistor whose current is being measured.
Choose the main circuit path for an ammeter measuring total current, distinguishing it from a single component branch.
Judge whether a laboratory ammeter is suitable for a large or very brief current, using its range, possible damage or response-time limitations.

[Maximum number: 1]

Fig. 10.1 shows an incomplete electrical circuit.

Fig. 10.1

A student completes the circuit and measures the current in the $6.0 \Omega$ resistor.

On Fig. 10.1, draw an ammeter symbol in one gap and straight lines to indicate wires in the other gaps to show how the student should do this.

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CAIE IGCSE Physics 4.2.2.2 Use of Ammeters Analogue and Digital Questions question 1