Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 152 · 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.💡 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
2. 2.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
3. 3.💡 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
4. 4.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) each gets the full volts
5. 5.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) each gets the full volts (d) one bulb out, all go out
6. 6.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) one bulb out, all go out (d) one out, the rest glow
7. 7.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
8. 8.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) own switch for each bulb (d) used in house wiring
9. 9.Which of these is true of a series circuit? (a) each gets the full volts (b) own switch for each bulb (c) one out, the rest glow (d) bulbs share the voltage
10. 10.💡 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 4 is taken out of its holder. How many bulbs glow?
11. 11.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
12. 12.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) many paths for current (c) bulbs share the voltage (d) one bulb out, all go out
13. 13.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they explode (d) they get dimmer
14. 14.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) one bulb out, all go out (d) a single current path
15. 15.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
16. 16.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) one out, the rest glow (d) one bulb out, all go out
17. 17.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
18. 18.💡 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
19. 19.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
20. 20.True or false: “a single current path” is true of a series circuit. (a) False (b) True
21. 21.💡 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?
22. 22.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
23. 23.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
24. 24.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) a single current path (c) bulbs share the voltage (d) one bulb out, all go out
25. 25.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
26. 26.💡 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?
27. 27.💡 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) dimmer (c) brighter
28. 28.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
29. 29.💡 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?
30. 30.💡 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?
31. 31.💡 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
32. 32.💡 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. All the bulbs are in place. How many bulbs glow?
33. 33.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
34. 34.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
35. 35.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 5 of the switches are OFF and the rest are ON. How many bulbs glow?
36. 36.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
37. 37.💡 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. All the bulbs are in place. Does bulb 1 glow? (a) No (b) Yes
38. 38.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
39. 39.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
40. 40.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =

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