Resistance and circuit components

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Question 49
Easy

Circuit diagram showing a cell connected in series with an ammeter, a variable resistor, and a length of nichrome wire clamped to a metre ruler. A voltmeter is connected in parallel across the nichrome wire.

The variable resistor shown in the diagram is used to prevent the nichrome wire from heating up significantly during the investigation.

Explain how the variable resistor is used to prevent the nichrome wire from becoming too hot.

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Resistance and circuit components Questions

  1. GCSE
  2. /Physics
  3. /Resistance and circuit components