# Home / EEE / ohms-law :: General Questions

### EEE :: ohms-law

1. An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately

2.  A. 385 B. 38.5 C. 3.1 D. 31    3. If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor?

4.  A. 8.25 V B. 82.5 V C. 14.6 V D. 146 V   5. The formula to find I when the values of V and R are known is

6.  A. I = VR B. I = R/V C. V = IR D. I = V/R   7. 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?

8.  A. 2 mA B. 2.2 mA C. 214 mA D. 21.4 mA   9. Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k of resistance?

10.  A. 27.2 mA B. 59 mA C. 5.9 mA D. 590 mA   11. How much resistance is required to limit the current from a 12 V battery to 3.6 mA?

12.  A. 3.3 k B. 33 k C. 2.2 k D. 22 k    13. What is the voltage source for a circuit carrying 2 A of current through a 36 resistor?

14.  A. 1.8 V B. 18 V C. 7.2 V D. 72 V   15. What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?

16.  A. 9.7 B. 97 C. 23 D. 230    17. How much voltage is needed to produce 2.5 A of current through a 200 resistor?

18.  A. 50 V B. 500 V C. 80 V D. 8 V   19. When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor is

20.  A. 14.4 V B. 1.4 V C. 100 V D. 10 V   