Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 69 · 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 out, the rest glow” is true of a parallel circuit. (a) False (b) True
2. 2.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) to save copper only (d) so all go off together
3. 3.Which of these is true of a series circuit? (a) a break stops every bulb (b) each gets the full volts (c) used in house wiring (d) own switch for each bulb
4. 4.💡 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 3 is taken out of its holder. How many bulbs glow?
5. 5.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they all go out (d) they explode
7. 7.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
8. 8.💡 A battery lights 5 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
9. 9.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) one bulb out, all go out (d) a single current path
10. 10.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
11. 11.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
12. 12.Which of these is true of a parallel circuit? (a) each gets the full volts (b) one bulb out, all go out (c) bulbs share the voltage (d) a break stops every bulb
13. 13.💡 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
14. 14.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) bulbs share the voltage (d) each gets the full volts
15. 15.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
16. 16.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
17. 17.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
18. 18.💡 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
19. 19.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
20. 20.💡 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. Bulb 1 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
21. 21.💡 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 2 and 3 are taken out of their holders. How many bulbs glow?
22. 22.💡 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 6 are taken out of their holders. Does bulb 2 glow? (a) Yes (b) No
23. 23.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
24. 24.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
25. 25.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
26. 26.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
27. 27.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
28. 28.💡 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 4 and 6 are taken out of their holders. How many bulbs glow?
29. 29.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
30. 30.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
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 2 is taken out of its holder. How many bulbs glow?
32. 32.💡 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. Does bulb 3 glow? (a) Yes (b) No
33. 33.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) many paths for current
34. 34.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
35. 35.💡 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?
36. 36.💡 6 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?
37. 37.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) used in house wiring (d) one bulb out, all go out
38. 38.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
39. 39.💡 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?
40. 40.💡 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) brighter (c) the same

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