Parallel circuits quiz

Take the parallel circuits quiz below to see how well you understand parallel circuits. After completing this quiz with 100% accuracy, you will know exactly how the current, the voltage, and the resistors behave in a parallel circuit. You will not need to use a paper and pencil to complete this quiz.

First, read the lesson about parallel circuits and then take this quiz.

Objective of the parallel circuit quiz:

  • Know how the current behaves in a parallel circuit
  • Know how the voltage behaves in a parallel circuit
  • Know how the resistor behaves in a parallel circuit
  • Know how to apply Ohm's law to find the current going through the circuit.
  • Find the current in the circuit
Test your knowledge with the quiz below:

1. The number of pathways the current can flow in a parallel circuit is equal to

equal to 0
equal to 1
greater than 1
usually greater than 2.

2. A parallel circuit usually has

1 device
more than 2 devices
no more more than 30 devices
at least 2 devices.

3. A parallel circuit has 2 branches. One branch has 1 resistor. The other branch has 1 lamp. The voltage in the circuit is 120 volts. The voltage in the lamps is

60 volts
120 volts
30 volts
Not enough information

4. A parallel circuit has 2 resistors with resistances 4 Ohms and 8 Ohms. The equivalent resistance will be

12 Ohms
smaller than 4 Ohms
6 Ohms
bigger than 6 Ohms

5. A parallel circuit has 6 branches. The resistance in one branch is increased by 6 Ohms. The current is that branch

will increase
will increase by 6 amperes
will decrease by 6 amperes
will decrease

6. A parallel circuit has 2 branches. Each branch has 1 resistor with the same resistance of 4 Ohms. The equivalent resistance is

4 Ohms
8 Ohms
2 Ohms
Not enough information

7. A parallel circuit with 2 branches is powered by a 20 volts battery. Each branch has 1 resistor with the same resistance of 2 Ohms. What is the current coming from the source?

20 amperes
10 amperes
5 amperes
15 amperes

8. In a parallel circuit, the current at the source is equal to the sum of all individual currents in the branches

Sometimes
Never
Not always
Always

9. A parallel circuit has 4 branches. Branch #1 has a 3 Ohms resistor. Branch #2 has a 5 Ohms resistor. Branch #3 has 2 Ohms resistor. Branch #4 has 6 Ohms resistor. Which branch will has a higher amperage?

Branch #1
Branch #2
Branch #3
Branch #4

10. A parallel circuit has 10 branches. Each branch has 1 resistor with the same resistance of R Ohms. The equivalent resistance is

10 + R
10*R
10/R
R/10



Score =

I strongly recommend you try your very best to complete this parallel circuits quiz on your own. Resist the urge to see the answers. Review the lesson about parallel circuit again. However, if you still cannot get 100% on your own, click here to see the answers.



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