Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 295 · 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: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
2. 2.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
3. 3.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) own switch for each bulb (c) a single current path (d) one bulb out, all go out
4. 4.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) so all go off together (d) each gets full voltage
5. 5.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) each gets the full volts (d) a break stops every bulb
6. 6.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) one out, the rest glow (d) a break stops every bulb
7. 7.Which of these is true of a series circuit? (a) used in house wiring (b) each gets the full volts (c) many paths for current (d) a single current path
8. 8.💡 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
9. 9.💡 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
10. 10.Which of these is true of a series circuit? (a) bulbs share the voltage (b) many paths for current (c) one out, the rest glow (d) own switch for each bulb
11. 11.💡 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?
12. 12.True or false: “a single current path” is true of a series circuit. (a) True (b) False
13. 13.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
14. 14.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
15. 15.Which of these is true of a parallel circuit? (a) used in house wiring (b) a break stops every bulb (c) a single current path (d) one bulb out, all go out
16. 16.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
17. 17.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
18. 18.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) one out, the rest glow (d) a break stops every bulb
19. 19.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
20. 20.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) used in house wiring (d) one bulb out, all go out
21. 21.💡 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 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
22. 22.💡 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
23. 23.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
24. 24.💡 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 2 is taken out of its holder. How many bulbs glow?
25. 25.💡 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 1 is taken out of its holder. How many bulbs glow?
26. 26.💡 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?
27. 27.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
28. 28.💡 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?
29. 29.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
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.💡 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. All the bulbs are in place. How many bulbs glow?
32. 32.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
33. 33.💡 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?
34. 34.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
35. 35.💡 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. Does bulb 6 glow? (a) No (b) Yes
36. 36.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
37. 37.💡 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?
38. 38.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
39. 39.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
40. 40.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False

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