1.1. The diagram shows part of an electric circuit.

Complete the circuit diagram by adding:

• a resistor in series with the lamp and battery

  • a second lamp in parallel with the first lamp

  • a voltmeter that measures the voltage across the resistor

  • an ammeter that measures the current in the resistor

1.2. The current in a resistor is measured for different voltages.

The table shows the results.

(i) Plot a graph of this data on the grid.

(4)

(ii) Circle the anomalous point on the graph.

(1)

(iii) Draw a line of best fit.

(1)

1.3. (i) State the equation linking voltage current and resistance.

(1)

(ii) Use your graph to find a value for the resistance of the resistor.

(2)

resistance = ............................................... Ω