1 .		When 12 V are applied across a 68 resistor, the current is [Hint]   816 mA   17.6 mA   176 mA   8.16 mA
2 .		When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is [Hint]   14.4 V   1.4 V   100 V   10 V
3 .		If 24 V are applied across a resistor and there are 10.9 mA of current, the resistance is [Hint]   220 k   22 k   2.2 k   220
4 .		A current of 200 µA through a 6.8 k resistor produces a voltage drop of [Hint]   34.4 V   340 V   13.6 V   1.36 V
5 .		A resistance of 3.3 M is connected across a 500 V source. The resulting current is approximately [Hint]   15.1 µA   151 µA   66 mA   660 mA
6 .		How much resistance is required to limit the current from a 12 V battery to 3.6 mA? [Hint]   3.3 k   33 k   2.2 k   22 k
7 .		An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately [Hint]   385   38.5   3.1   31
8 .		The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately [Hint]   112   11.2   1.2   18
9 .		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? [Hint]   2 mA   2.2 mA   214 mA   21.4 mA
10 .		What is the voltage source for a circuit carrying 2 A of current through a 36 resistor? [Hint]   1.8 V   18 V   7.2 V   72 V
11 .		If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor? [Hint]   8.25 V   82.5 V   14.6 V   146 V
12 .		Four amperes of current are measured through a 24 resistor connected across a voltage source. How much voltage does the source produce? [Hint]   960 V   9.6 V   96 V   8 V
13 .		What is the approximate resistance of a rheostat if the voltage source is 18 V and the current flow is 220 mA? [Hint]   8.2 k   820   8.2   82
14 .		Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor? [Hint]   4   400   4 k   4.4
15 .		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? [Hint]   183   18.3   66   6.6
16 .		What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source? [Hint]   9.7   97   23   230
17 .		A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms. [Hint]   40   4   2   20
18 .		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? [Hint]   9 V   900 mV   0 V   18 V
19 .		If you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be? [Hint]   8 V   320 V   3.2 V   32 V
20 .		How much voltage is needed to produce 2.5 A of current through a 200 resistor? [Hint]   50 V   500 V   80 V   8 V
21 .		Approximately how many milliamperes of current flows through a circuit with a 40 V source and 6.8 k of resistance? [Hint]   27.2 mA   59 mA   5.9 mA   590 mA
22 .		Approximately how much current flows through a 3.3 M resistor across a 30 V source? [Hint]   9 A   90 A   900 A   9 A
23 .		How much current is produced by a voltage of 18 kV across a 15 k resistance? [Hint]   1.2 A   12 A   120 mA   12 mA
24 .		How much resistance is needed to draw 17.6 mA from a 12 volt source? [Hint]   212   6.8 k   68   680
25 .		The formula to find I when the values of V and R are known is [Hint]   I=VR   I=R/V   V=IR   I=V/R