# Electric Circuit Analysis/Circuit Analysis Quiz 1 ELECTRIC CIRCUIT ANALYSIS: QUIZ TEST 1 You have done well to get to this point. This is your chance to test just how well you are doing. Remember that you set your pace, in your Open-Learning. You are advised to go through Lessons 1, 2 & 3 and do Exercises 1, 2 & 3 thoroughly before attempting this quiz. Pointers on answering the quiz Here are some pointers to answering this test. Please read them carefully before attempting the questions. Be honest to yourself. After attempting all questions, click on the Submit button to view your score and the model answers. Due to the foregoing please attempt this quiz test only once. This test is on material covered thus far and as follows: Single resistor voltage problems. Single resistor resistance problems. Single resistor power problems. Series resistor problems. Series resistor voltage problems. Parallel resistor problems. Parallel resistor current problems. Select the most correct answer of the four possible answers to each question. A calculator is allowed. Feel free to do work on a piece of paper.Can't understand a specific question?Click here to ask for help.

Quiz Test

1

 3 amps flow through a 1 ohm resistor. What is the voltage?

 (A) 1V. (B) ${\frac {1}{3}}V$ (C) 3V. (D) None of the above.

2

 Why do we say the "voltage across" or "the voltage with respect to?" Why can't we just say voltage?

 (A) Voltage is a measure of electric potential difference between two electrical points. (B) It's an electrical cliche. (C) The other point could be negative or positive. (D) None of the above.

3

 A resistor consumes 5 watts, and its current is 10 amps. What is its voltage?

 (A) 10V. (B) 0.5V. (C) 2V. (D) 15V.

4

 A resistor has 10 volts across it and 4 amps going through it. What is its resistance?

 (A) $2.5\Omega .$ (B) $3.5\Omega .$ (C) $4.5\Omega .$ (D) None of the above.

5

 If you plot voltage vs. current in a circuit, and you get a linear line, what is the significance of the slope?

 (A) Power. (B) Discriminant. (C) Resistance. (D) None of the above.

6

 A resistor has 3 volts across it. Its resistance is 1.5 ohms. What is the current?

 (A) 3A (B) 12A (C) 2A (D) 1.5A

7

 A resistor has 8 volts across it and 3 amps going through it. What is the power consumed?

 (A) 24W (B) 3W (C) 8W (D) 2.2W

8

 A resistor has a voltage of 5 volts and a resistance of 15 ohms. What is the power consumed?

 (A) 1.67 watts (B) 11.67 joules (C) 2.5 watts (D) None of the above

9

 A resistor is on for 5 seconds. It consumes power at a rate of 5 watts. How many joules are used?

 (A) 5 joules (B) 25 joules (C) 3 joules (D) None of the above

10

 A 1 ohm resistor has 5 volts DC across its terminals. What is the current (I) and the power consumed?

 (A) I = 5A & P = 25W. (B) I = 5A & P = 5W. (C) I = 5A & P = 9W (D) I = 5A & P = 3W.

11

 The voltage across two resistors in series is 10 volts. One resistor is twice as large as the other. What is the voltage across the larger resistor? What is the voltage across the smaller one?

 (A) $V_{small-Resistor}=5V$ and $V_{Big-Resistor}=5V$ . (B) $V_{Big-Resistor}=3.33V$ and$V_{small-Resistor}=6.67V$ . (C) $V_{Big-Resistor}=6.67V$ and $V_{small-Resistor}=3.33V$ . (D) None of the above.

12

 A 1 ohm, 2 ohm, and 3 ohm resistor are connected in series. What is the total resistance?

 (A) $R_{Total}=0.5454\Omega$ . (B) $R_{Total}=6\Omega$ . (C) $R_{Total}=3\Omega$ . (D) None of the above.

13

 Two identical resistors are connected in series. The voltage across both of them is 250 volts. What is the voltage across each one?

 (A) $R_{1}=125V$ and $R_{2}=125V$ . (B) $R_{1}=250V$ and $R_{2}=0V$ . (C) $R_{1}=150V$ and $R_{2}=100V$ . (D) None of the above.

14

 A 1 ohm, 2 ohm, and 3 ohm resistor are connected in parallel. What is the total resistance?

 (A) ${\frac {6}{3}}\Omega$ . (B) ${\frac {3}{6}}\Omega$ . (C) ${\frac {11}{6}}\Omega$ . (D) ${\frac {6}{11}}\Omega$ .

15

 A 5 ohm and a 2 ohm resistor are connected in parallel. What is the total resistance?

 (A) ${\frac {10}{7}}\Omega$ . (B) ${\frac {7}{10}}\Omega$ . (C) ${\frac {10}{6}}\Omega$ . (D) ${\frac {6}{10}}\Omega$ .

16

 A 7 ohm and a 3 ohm resistor are connected in parallel. What is the total resistance?

 (A) ${\frac {10}{21}}\Omega$ . (B) ${\frac {21}{10}}\Omega$ . (C) ${\frac {11}{7}}\Omega$ . (D) ${\frac {7}{11}}\Omega$ .

17

 Three 1 ohm resistors are connected in parallel. What is the total resistance?

 (A) ${\frac {3}{2}}\Omega$ . (B) ${\frac {2}{3}}\Omega$ . (C) ${\frac {1}{3}}\Omega$ . (D) $3\Omega$ .

18

 If you put an infinite number of resistors in parallel, what would the total resistance be?

 (A) $R_{total}$ would approach zero as the number of resistors in parallel approaches infinity. (B) $R_{total}$ would approach 1 as the number of resistors in parallel approaches infinity. (C) It is not possible to connect that number of resistors in parallel. (D) None of the above.

19

 What is the current through R1 and R2 in the following diagram?

 (A) $I_{1}=1A$ and $I_{2}=25A$ . (B) $I_{1}=0.1A$ and $I_{2}=0.1667A$ . (C) $I_{1}=1A$ and $I_{2}=1.667A$ . (D) $I_{1}=10A$ and $I_{2}=16.67A$ .

20

 What is the current through R1, R2, R3, and R4 in the following diagram?

 (A) $I_{1}=10A$ ; $I_{2}=50A$ ; $I_{3}=33A$ ; $I_{4}=25A$ .. (B) $I_{1}=1A$ ; $I_{2}=5A$ ; $I_{3}=3.3A$ ; $I_{4}=2.5A$ . (C) $I_{1}=0.25A$ ; $I_{2}=0.33A$ ; $I_{3}=0.5A$ ; $I_{4}=0.1A$ . (D) $I_{1}=1A$ ; $I_{2}=0.5A$ ; $I_{3}=0.33A$ ; $I_{4}=0.25A$ .

21

 Two resistors are in parallel with a voltage source. How do their voltages compare?

 (A) The voltage across both resistors is the same as the source. (B) The voltage across both resistors is half the voltage of the source. (C) One has full voltage, the other has none. (D) None of the above. Where to from here? Take some time off, you've done well. If you're a workaholic then you can go to the next page.