Ohm's law for a mixed connection of conductors.

Name ________________________________________ Date __________ Period ________

Worksheet: Circuits & Ohm’s Law

     S E R I E S A N D P A R A L L E L C I R C U I T S

Directions: Answer the following questions based on reading from Chapter 23 (pgs. 531-550) and/or from notes in class.

Equations:

GENERAL EQUATIONS

SERIES CIRCUITS

PARALLEL CIRCUITS

ELECTRICAL CIRCUIT SYMBOLS

QUESTIONS:

1.  Draw a circuit schematic (diagram) to include a

50. 0 V battery, an ammeter, and a resistance of

10. 0 Ω in series.

a.  What is the reading on the ammeter?

b.  In which direction is the current flowing?

2.  How much current flows through a radio speaker that has a resistance of 4.0 Ω when 16 V is impressed across the speaker?

3.  Draw a circuit diagram of the circuit described

in the question above. Include a 6 V battery, an

ammeter (labeled with value of current), and a

resistance of 3.0 Ω (the speaker). Also label the

direction of the conventional (+) current.

4.  The following questions pertain to the circuit diagramed to the right.

a. Lamp A reads a voltage of 12 V. What is the voltage of lamp B?

b. If the ammeters on both branches read the same amount, what does this tell you about the resistance of the two branches?

c. If the current flowing in the first branch was 4.0 A and 6.0 A in the second branch, what would the total current in the circuit be?

5.  Draw a series circuit diagram showing a

6. 0 V battery, a resistor, & an ammeter reading of 2.0 A.

a.  Label: the size of the resistor, the direction of conventional current, the (+) and (-) terminals of the battery.

b.  Add a voltmeter to you diagram and indicate the potential difference across the resistor.

6.            Use the circuit diagram to the right to answer the following questions.

a.  What is the current flowing through this series circuit if the total resistance is 20 Ω?

b.  What would the voltage across each of the three bulbs be? What could you say about the brightness of each of the bulbs?

c.  If two of the bulbs had a total resistance of 15 Ω, what would the resistance of the third bulb be?

d.  What would be the current flowing through the circuit be is the voltage source was 6.0 V, and each of the lamps had a resistance of 2 Ω?

8.  Draw a circuit diagram showing three 10 Ω resistors connected in parallel and placed across a 60.0 V battery.

a.  What is the equivalent resistance of the parallel circuit?

b.  What is the current through the entire circuit?

c.  What is the current through each branch of the circuit?

9.  Draw a circuit diagram showing the following: a 800.0 Ω resistor, a 40 Ω resistor, and a 20 Ω resistor connected

in parallel and connected across a 24.0 V battery.

a.  What is the equivalent resistance of the

parallel circuit?

b. What is the current through the entire circuit?

c. What is the current through each branch of

the circuit?

10.  Answer the following questions about the circuit to the right.

6.0 V

a. What do each of the 4 voltmeters read?

b. If each of the resistors are identical, and the total current flowing through this parallel circuit is 12.0 A, what is the total resistance of this circuit?