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Unformatted text preview: liquid bath, the resistance decreases to 97 Ω. What is the temperature of the bath? The temperature coefficient of resistivity, α , for gold is 3.4 x 103 ( o C)1 . Hint: First determine the resistance for 20 o C , which is the reference temperature for the resistivity data. . [6 marks] 2 4. For the circuit below: a) Find the equivalent resistance, R eq . [4 marks] b) What is the total current provided by the battery? [2 marks] c) What is the total power provided by the battery? [2 marks] d) What is the total power dissipated by the resistors? [2 marks] 3 5. For the circuit below: a) find the currents I 1, I 2 and I 3 ? [6 marks] b) Find the potential difference between points a and b in the diagram. Which point has a higher potential. [1 mark] I 1 I 2 I 3 V b – V a Point _____ has a higher potential. 4 5...
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 Winter '08
 Wrzesneski
 Physics, Work, Light, Resistor, Electrical resistance

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