Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 52 · 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: “many paths for current” is true of a series circuit. (a) False (b) True
2. 2.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
3. 3.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they get dimmer (d) they explode
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 series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) a single current path (d) used in house wiring
6. 6.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
7. 7.💡 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?
8. 8.Which of these is true of a parallel circuit? (a) many paths for current (b) a single current path (c) one bulb out, all go out (d) a break stops every bulb
9. 9.💡 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
10. 10.💡 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?
11. 11.Which of these is true of a series circuit? (a) used in house wiring (b) one bulb out, all go out (c) one out, the rest glow (d) own switch for each bulb
12. 12.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
13. 13.💡 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?
14. 14.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) one out, the rest glow (d) bulbs share the voltage
15. 15.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
16. 16.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
17. 17.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) own switch for each bulb (c) a break stops every bulb (d) a single current path
18. 18.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
19. 19.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
20. 20.💡 6 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.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
22. 22.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
23. 23.💡 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 2 and 6 are taken out of their holders. How many bulbs glow?
24. 24.💡 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) the same (c) dimmer
25. 25.💡 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?
26. 26.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) each gets the full volts (c) bulbs share the voltage (d) a single current path
27. 27.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
28. 28.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
29. 29.💡 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) dimmer (c) brighter
30. 30.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) one bulb out, all go out (c) a break stops every bulb (d) bulbs share the voltage
31. 31.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
32. 32.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
33. 33.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
34. 34.💡 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 1 and 4 are taken out of their holders. Does bulb 3 glow? (a) No (b) Yes
35. 35.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
36. 36.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
37. 37.Which of these is true of a series circuit? (a) own switch for each bulb (b) a break stops every bulb (c) many paths for current (d) used in house wiring
38. 38.💡 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 1 is taken out of its holder. Does bulb 5 glow? (a) No (b) Yes
39. 39.💡 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 3 and 5 are taken out of their holders. How many bulbs glow?
40. 40.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) used in house wiring (d) bulbs share the voltage

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