A student investigated how the resistance of a piece of nichrome wire varies with length. Figure 1 shows part of the circuit the student used. Describe how the student would obtain the data needed for the investigation. Your answer should include a risk assessment for one hazard in the investigation.

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Q1.

A student investigated how the resistance of a piece of nichrome wire varies with length.
Figure 1 shows part of the circuit the student used.

Describe how the student would obtain the data needed for the investigation.
Your answer should include a risk assessment for one hazard in the investigation.

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