Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 287 · 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.💡 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 2 are taken out of their holders. How many bulbs glow?
2. 2.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
3. 3.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
4. 4.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) bulbs share the voltage (d) own switch for each bulb
5. 5.Which of these is true of a parallel circuit? (a) used in house wiring (b) one bulb out, all go out (c) a single current path (d) a break stops every bulb
6. 6.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
7. 7.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) many paths for current (d) a single current path
8. 8.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) own switch for each bulb (d) bulbs share the voltage
9. 9.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
10. 10.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
11. 11.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
12. 12.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
13. 13.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
14. 14.💡 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) the same (c) dimmer
15. 15.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
16. 16.💡 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?
17. 17.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
18. 18.Which of these is true of a series circuit? (a) many paths for current (b) one bulb out, all go out (c) used in house wiring (d) each gets the full volts
19. 19.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
20. 20.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
21. 21.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
22. 22.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
23. 23.💡 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?
24. 24.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
25. 25.💡 A battery lights 4 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
26. 26.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) each gets the full volts (d) a single current path
27. 27.💡 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?
28. 28.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
29. 29.True or false: “a single current path” is true of a series circuit. (a) False (b) True
30. 30.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.💡 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?
32. 32.💡 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) the same (c) brighter
33. 33.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) used in house wiring (d) a break stops every bulb
34. 34.💡 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
35. 35.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
36. 36.💡 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?
37. 37.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
38. 38.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
39. 39.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
40. 40.💡 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 4 are taken out of their holders. Does bulb 3 glow? (a) Yes (b) No

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