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P7: Quiz 4
P7: Quiz 4
Click here for a printable PDF of the circuit, table and graph.
1) We can undertake an experiment to investigate how the length of a wire affects the resistance of the wire. The diagram below shows an incomplete circuit with a battery and a ruler with two crocodile clips connected to a wire.
1) We can undertake an experiment to investigate how the length of a wire affects the resistance of the wire. The diagram below shows an incomplete circuit with a battery and a ruler with two crocodile clips connected to a wire.
a) Add an ammeter to measure the current and a voltmeter to measure the potential difference of the length of wire to the above circuit diagram.
b) Explain how we would undertake the experiment to investigate how the length of wire affects the resistance of the wire.
c) A student completes the experiment and his results are shown in the table below.
b) Explain how we would undertake the experiment to investigate how the length of wire affects the resistance of the wire.
c) A student completes the experiment and his results are shown in the table below.
i) Plot the values from the table for length and resistance on the graph below. Also, add a line of best fit to your graph.
ii) Describe the relationship between length of a wire and resistance. Explain your answer.