Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 201 · 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.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) many paths for current (d) each gets the full volts
2. 2.Which of these is true of a series circuit? (a) a single current path (b) used in house wiring (c) each gets the full volts (d) own switch for each bulb
3. 3.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) a break stops every bulb (c) a single current path (d) one bulb out, all go out
4. 4.Which of these is true of a parallel circuit? (a) a single current path (b) each gets the full volts (c) bulbs share the voltage (d) a break stops every bulb
5. 5.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
6. 6.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
7. 7.💡 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
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) the same (b) brighter (c) dimmer
9. 9.💡 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?
10. 10.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
11. 11.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
12. 12.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
13. 13.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) one out, the rest glow (d) a break stops every bulb
14. 14.💡 A battery lights 4 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
15. 15.True or false: “one out, the rest glow” 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) each gets full voltage (c) to make bulbs dim (d) so all go off together
17. 17.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
18. 18.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
19. 19.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they keep glowing (d) they get dimmer
20. 20.💡 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?
21. 21.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
22. 22.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) a single current path (c) a break stops every bulb (d) one bulb out, all go out
23. 23.💡 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
24. 24.💡 4 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?
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. Bulb 3 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
26. 26.💡 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 2 is taken out of its holder. Does bulb 3 glow? (a) No (b) Yes
27. 27.💡 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
28. 28.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
29. 29.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
30. 30.💡 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
31. 31.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
32. 32.Which of these is true of a series circuit? (a) bulbs share the voltage (b) used in house wiring (c) many paths for current (d) own switch for each bulb
33. 33.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
34. 34.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
35. 35.💡 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?
36. 36.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
37. 37.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
38. 38.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
39. 39.True or false: “a single current path” is true of a series circuit. (a) True (b) False
40. 40.💡 6 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =

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