NAME:_________________________________________ DATE:______________ PERIOD:______ Electric Circuits Test Review
The test will consist of True/False, Multiple Choice Questions and Short answer Questions.
Remember you also need to review your notes and any worksheets completed in this unit
1. Define an open Circuit:
2. Define a Closed Circuit:
3. What formula is used to find equivalent resistance when resistors are in series?
4. What formula is used to find equivalent resistance when resistors are in parallel?
5. In Series voltage is [shared / the same everywhere] and current is [shared / the same everywhere].
6. In parallel voltage is [shared / the same everywhere] and current is [shared / the same everywhere].
7. In a series circuit the all flows through one path. In a parallel circuit the current has a choice of paths to
follow. (True or False) _________________
8. In a series circuit, if one bulb goes out the others_____________________. In a parallel circuit, if one bulb
goes out the others ___________________________.
9. Three resistors with values of 2.0 , 8.0 , and 5.0  are connected in parallel. What is their equivalent
resistance?
10. A total current of 10 A passes through three resistors placed in parallel with a battery. The resistors have
resistance values of 15 ohm, 25 ohm, and 30 ohm. What is the voltage being supplied by the battery?
11. A multimeter measures the current in a circuit. The circuit contains one resistor, what would happen to the
current in the circuit if a second resistor was added in series with the first resistor? __________________
_________________________
12. Define resistance
13. In the diagram above, which bulb(s) will go out if switch Z is opened? ______________ What if switch Y is
opened?______________________ What if switch X is opened?________________
14. Three resistors with values of 4.0 , 6.0 , and 10.0 , respectively, are connected in series. What is their
equivalent resistance?
15. A current of 5 A passes through two resistors placed in series. The first resistor has a resistance of 10  and
the second resistor has a resistance of 20 . What is the total voltage across the two resistors?
16. If the potential difference across a pair of batteries used to power a flashlight is 6.0 V, what is the potential
difference across the flashlight bulb?
16. Calculate the total resistance of two 4  resistors in parallel. Sketch the circuit.
17. Calculate the total resistance of two 4  resistors in series. Sketch the circuit.
18. Draw a schematic diagram that contains a 6 V battery, a switch and two 3  resistors in parallel.
19. Draw a schematic diagram that contains two resistors, one battery, and an open switch in series.
20. Calculate the total resistance of two 6  resistors in series. Sketch the circuit.
21. Calculate the total resistance of two 8  resistors in parallel. Sketch the circuit.
22. Describe the difference you would observe in two light bulbs in series powered by a 3 Volt battery compared
to the same 2 light bulbs powered by the same 3Volt battery but now they are in parallel. Why would this
difference be observed?
23. Complete the table:
Current
Resistance
Potential Difference (Voltage)
Power
Units (abbreviation)
Amps (A)
Equation Symbol
I
24. If two bulbs are connected in Series with a 6 Volt battery, each bulb will receive _____ volts.
25. If two bulbs are connected in Parallel with a 6 Volt battery, each bulb will receive _____ volts.