Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 91 · 40 questions

Remember (A path for each): Each bulb has its own path: removing one leaves the others glowing. Each bulb gets the full battery voltage. Total current = add the current of each path (n identical bulbs → n × one bulb’s current).

1. 1.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
2. 2.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they keep glowing (d) they explode
3. 3.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
4. 4.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
5. 5.Which of these is true of a series circuit? (a) a single current path (b) used in house wiring (c) one out, the rest glow (d) each gets the full volts
6. 6.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
7. 7.Which of these is true of a series circuit? (a) a break stops every bulb (b) one out, the rest glow (c) own switch for each bulb (d) used in house wiring
8. 8.💡 3 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
9. 9.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
10. 10.Which of these is true of a series circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) each gets the full volts (d) many paths for current
11. 11.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
12. 12.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) to save copper only (d) each gets full voltage
13. 13.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) a break stops every bulb (d) own switch for each bulb
14. 14.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
15. 15.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
16. 16.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
17. 17.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
18. 18.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) many paths for current (c) a single current path (d) one bulb out, all go out
19. 19.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
20. 20.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) bulbs share the voltage (d) one out, the rest glow
21. 21.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
22. 22.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
23. 23.💡 2 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 2 glow? (a) Yes (b) No
24. 24.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
25. 25.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) bulbs share the voltage (d) each gets the full volts
26. 26.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
27. 27.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
28. 28.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
29. 29.💡 3 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
30. 30.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.💡 6 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 6 glow? (a) Yes (b) No
32. 32.💡 4 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
33. 33.💡 3 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
34. 34.True or false: “a single current path” is true of a series circuit. (a) True (b) False
35. 35.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
36. 36.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
37. 37.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
38. 38.💡 2 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
39. 39.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
40. 40.💡 3 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. How many bulbs glow?

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