OHM'S LAW QUIZ

When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is

1.4 V

100 V

10 V

14.4 V

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If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor?

14.6 V

8.25 V

82.5 V

146 V

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What is the approximate filament resistance of a light bulb if it operates from a 110 V source and 0.6 A of current is flowing?

66

6.6

18.3

183

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How much resistance is needed to draw 17.6 mA from a 12 volt source?

680

68

212

6.8 k

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A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?

2.2 mA

21.4 mA

2 mA

214 mA

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You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?

900 mV

18 V

0 V

9 V

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Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor?

400

4.4

4 k

4

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What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?

97

9.7

230

23

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Four amperes of current are measured through a 24 resistor connected across a voltage source. How much voltage does the source produce?

96 V

8 V

960 V

9.6 V

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How much resistance is required to limit the current from a 12 V battery to 3.6 mA?

22 k

33 k

2.2 k

3.3 k

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