PRACTICE QUIZ 22/23A

Answer the following questions completely and clearly.

1. Define and give the accepted units for : current, voltage, potential difference, power, energy.

  

 

 

2. How is an ammeter connected to a circuit? What does it measure?

 

3. How is a voltmeter connected to a circuit? What does it measure?

  

4. What is meant by the term "equivalent resistance?"

  

5. What is conventional current and how is it related to the flow of electrons? How did it become "conventional?"

  

 

Solve the following. Show all work and circle your answer.

6. Draw a diagram in which three resistors (R₁ = 12 ohms, R₂ = 4 ohms, R₃ = 6 ohms) are connected in series. What is the equivalent resistance? (R_T = 22 ohms)

 

  

7. What would be the equivalent resistance if the resistors in the above question were connected in parallel? (R_T = 2 ohms)

 

 

 

 

 

8. A 4 ohm resistor is connected in series to a 12 ohm resistor and a 6 ohm resistor connected in parallel. What is the total current if the circuit is connected to a 16 volt source? (2 A)

 

 

 

9. A 6 ohm resistor is connected in series to a 9 ohm resistor and a 18 ohm resistor connected in parallel. The circuit is connected in series to a 36 V source.

a) What is the voltage drop across the parallel combination? (18 V)

 

 

 

 

b) What is the current through the 9 ohm resistor? (2 A)

 

 

 

c) What is the power used by the 9 ohm resistor? (36 W)