Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 248 · 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: “each gets the full volts” is true of a series circuit. (a) True (b) False
2. 2.💡 5 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?
3. 3.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
4. 4.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) a break stops every bulb (d) a single current path
5. 5.💡 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. Bulbs 2 and 4 are taken out of their holders. How many bulbs glow?
6. 6.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) own switch for each bulb (d) one bulb out, all go out
7. 7.💡 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 3 and 5 are taken out of their holders. Does bulb 2 glow? (a) Yes (b) No
8. 8.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) one bulb out, all go out (d) each gets the full volts
9. 9.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they explode (d) they get dimmer
10. 10.💡 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
11. 11.Which of these is true of a parallel circuit? (a) many paths for current (b) one bulb out, all go out (c) a break stops every bulb (d) a single current path
12. 12.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
13. 13.Which of these is true of a series circuit? (a) one bulb out, all go out (b) many paths for current (c) own switch for each bulb (d) used in house wiring
14. 14.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
15. 15.True or false: “a single current path” is true of a series circuit. (a) False (b) True
16. 16.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) to make bulbs dim (d) each gets full voltage
17. 17.💡 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?
18. 18.💡 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?
19. 19.💡 5 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?
20. 20.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
21. 21.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
22. 22.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
23. 23.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
24. 24.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
25. 25.💡 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 2 and 4 are taken out of their holders. How many bulbs glow?
26. 26.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
27. 27.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) many paths for current (d) a break stops every bulb
28. 28.💡 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. All the bulbs are in place. Does bulb 1 glow? (a) Yes (b) No
29. 29.💡 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 3 and 4 are taken out of their holders. How many bulbs glow?
30. 30.💡 3 identical bulbs are in parallel and each one takes 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 4 are taken out of their holders. How many bulbs glow?
32. 32.💡 3 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?
33. 33.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
34. 34.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
35. 35.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
36. 36.Which of these is true of a series circuit? (a) many paths for current (b) a single current path (c) one out, the rest glow (d) each gets the full volts
37. 37.💡 A battery lights 2 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
38. 38.💡 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 3 is taken out of its holder. How many bulbs glow?
39. 39.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
40. 40.💡 5 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =

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