1) A potential difference of 12V and a current of 3A is measured in the circuit shown. Calculate the resistance of R. a) 4 Watts b) 4 Ohms c) 3 Ohms d) 3 Watts 2) The circuit is constructed with a resistance of 100 Ohms. The current is measured as 0.02A. What would the potential difference measured across R be? a) 5 KV b) 5 V c) 2 V d) 2 A 3) A resistance of 1 kOhms (1000 Ohms) is placed into a circuit. The potential difference measure across the resistor R is 8 V. What current would flow in the circuit? a) 0.008 A b) 0.008 V c) 0.08 A d) 0.8 A 4) On the Voltage-Current graph, which line would represent the highest resistance? a) A b) B c) C d) D 5) On the Current-Voltage graph, which line represents the highest voltage? a) A b) B c) C d) D 6) A 10V supply voltage is connected to the circuit shown. Calculate the potential difference that would be measured across R2 if R1=470 Ohms and R2=390 Ohms a) 0.45 V b) 4.7 V c) 3.9 V d) 4.5 V 7) Calculate the required value of R2, if Vin=10V, R1=200 Ohms and the required voltage across R2 is 2.5 V. a) 2.5 Ohms b) 200 Ohms c) 67 Ohms d) 267 Ohms 8) The graph shows the Current-Voltage graph for a bulb. Which phrase best describes why the graph looks like this? a) The resistance of the bulb increases as the current increases b) The resistance of the bulb decreases as the current inclreases c) The resistance of the bulb stays the same as the current increases d) The resistance of the bulb increases as the current decreases

P6L7-ResistanceAndPotentialDividerQuiz

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