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Paper 1 H - SAMPLE SET 1 Q19

19) A student takes voltage and current measurements for four resistors.
​The table shows the results from this experiment.
Picture
(a) Which two resistors have the same resistance value? Use the data to show this. [2]

(b) Calculate the maximum resistance that can be made using all four resistors. [1]
​
answer: ........................... Ω
​

(c) (i) Draw a circuit diagram that could be used to find out how the resistance of a filament bulb changes with current.
Describe the readings you need to take. [4]

​(ii) Sketch the shape of the graph using the axes below.
Picture
State how this graph can be used to calculate resistance at any specific value of current. [2]

(d) A voltmeter is used to measure the output voltages produced from the circuit.
​The voltmeter is not connected to a circuit and not recording a voltage.
Picture
Name the error on the voltmeter and suggest how it should be dealt with. [2]

(​Total for Question 19 = 11 marks)
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