23 12 This question is about the voltage-current characteristics of a conductor. Look at the voltage-current graph. 10 9 8 7 6 voltage in V
5 4 3 2 1 0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 current in A
Identify the conductor and describe how the value of its resistance changes from low to high current. Use kinetic theory to explain the changes. The quality of written communication will be assessed in your answer to this question. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .................................................................................................................................................... [6] [Total: 6] Š OCR 2014
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