Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 264 · 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.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
2. 2.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
3. 3.💡 2 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
4. 4.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
5. 5.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) many paths for current (d) bulbs share the voltage
6. 6.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
7. 7.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
8. 8.💡 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 3 are taken out of their holders. Does bulb 2 glow? (a) No (b) Yes
9. 9.💡 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. Bulbs 1 and 3 are taken out of their holders. How many bulbs glow?
10. 10.💡 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 3 are taken out of their holders. How many bulbs glow?
11. 11.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
12. 12.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to save copper only (c) to make bulbs dim (d) so all go off together
13. 13.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) a single current path (c) one bulb out, all go out (d) bulbs share the voltage
14. 14.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
15. 15.Which of these is true of a series circuit? (a) one bulb out, all go out (b) many paths for current (c) each gets the full volts (d) used in house wiring
16. 16.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
17. 17.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) each gets the full volts (d) a single current path
18. 18.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) used in house wiring (c) a break stops every bulb (d) a single current path
19. 19.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
20. 20.💡 2 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
21. 21.💡 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 1 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
22. 22.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they explode (d) they get dimmer
23. 23.💡 A battery lights 5 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
24. 24.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
25. 25.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) bulbs share the voltage (d) one out, the rest glow
26. 26.💡 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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
27. 27.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
28. 28.💡 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) brighter (c) dimmer
29. 29.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
30. 30.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
31. 31.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
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 3 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
33. 33.💡 A battery lights 3 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
34. 34.💡 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?
35. 35.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
36. 36.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
37. 37.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
38. 38.💡 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. Bulbs 3 and 4 are taken out of their holders. Does bulb 2 glow? (a) No (b) Yes
39. 39.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) bulbs share the voltage (d) own switch for each bulb
40. 40.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =

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