CAPE Physics Unit 2 · May/June 2025 · Paper 2 · Question 1(b)(i)

In an experiment to measure the resistivity of an unknown metal, ρ, a sample of the metal was drawn into a wire of diameter 2 mm and length 30 m. A current of 2 A was passed through the wire and the voltage drop, V, across different lengths of wire, L, was measured and recorded in Table 1.

On the grid provided in Figure 1 on page 7, plot a graph of voltage drop versus length. Draw the line of best fit through the points.

This question uses a figure or table from the paper — you'll see it when you practise.