Practical electricity experiment questions
Q1.
(a) A student is given a piece of metal wire and asked to investigate how the resistance of the wire changes between a temperature of 0 oC and 100 oC.
(i) Draw a labelled diagram of a suitable arrangement that would enable the student to carry out the experiment.
(3 marks)
(ii) Describe the procedure the student would follow in order to obtain accurate and reliable measurements of the resistance of the wire at different temperatures. The temperature range should be between 0 oC and 100 oC.
(6 marks)
(b) A certain metal has a critical temperature of –268 oC (5 K). Explain what is meant by critical temperature.
(2 marks)
(Total 11 marks)
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