Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 319 · 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: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
2. 2.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) a break stops every bulb (d) one bulb out, all go out
3. 3.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
4. 4.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) many paths for current (d) each gets the full volts
5. 5.💡 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 2 are taken out of their holders. Does bulb 3 glow? (a) Yes (b) No
6. 6.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) many paths for current (c) a break stops every bulb (d) bulbs share the voltage
7. 7.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
8. 8.💡 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) dimmer (c) the same
9. 9.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
10. 10.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
11. 11.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they all go out (d) they get dimmer
12. 12.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) bulbs share the voltage (d) own switch for each bulb
13. 13.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) so all go off together (d) to save copper only
14. 14.Which of these is true of a series circuit? (a) each gets the full volts (b) used in house wiring (c) one bulb out, all go out (d) one out, the rest glow
15. 15.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
16. 16.💡 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) the same (c) brighter
17. 17.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) one out, the rest glow (d) a single current path
18. 18.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
19. 19.💡 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. How many bulbs glow?
20. 20.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
21. 21.💡 6 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?
22. 22.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
23. 23.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
24. 24.💡 A battery lights 2 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
25. 25.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
26. 26.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
27. 27.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?
28. 28.💡 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?
29. 29.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
30. 30.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
31. 31.💡 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 1 and 3 are taken out of their holders. Does bulb 4 glow? (a) Yes (b) No
32. 32.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
33. 33.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
34. 34.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
35. 35.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
36. 36.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
37. 37.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
38. 38.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) used in house wiring (d) a break stops every bulb
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.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =

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