Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 135 · 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.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
2. 2.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
3. 3.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) a single current path (d) each gets the full volts
4. 4.💡 5 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?
5. 5.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) a break stops every bulb (d) one out, the rest glow
6. 6.💡 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 3 are taken out of their holders. How many bulbs glow?
7. 7.💡 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
8. 8.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) a break stops every bulb (c) one bulb out, all go out (d) bulbs share the voltage
9. 9.💡 A battery lights 3 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
10. 10.💡 4 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?
11. 11.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
12. 12.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) own switch for each bulb (d) one bulb out, all go out
13. 13.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
14. 14.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
15. 15.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
16. 16.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
17. 17.💡 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) dimmer (c) the same
18. 18.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
19. 19.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
20. 20.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
21. 21.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 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?
23. 23.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they all go out (d) they explode
24. 24.Which of these is true of a series circuit? (a) bulbs share the voltage (b) each gets the full volts (c) many paths for current (d) own switch for each bulb
25. 25.💡 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 3 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
26. 26.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
27. 27.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
28. 28.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
29. 29.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
30. 30.💡 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?
31. 31.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
32. 32.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
33. 33.Which of these is true of a parallel circuit? (a) used in house wiring (b) a single current path (c) bulbs share the voltage (d) one bulb out, all go out
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 2 and 4 are taken out of their holders. How many bulbs glow?
35. 35.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
36. 36.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
37. 37.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to save copper only (d) to make bulbs dim
38. 38.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
40. 40.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids