Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 318 · 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.💡 A battery lights 3 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
2. 2.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) one bulb out, all go out (d) many paths for current
3. 3.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
4. 4.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
5. 5.💡 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
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they all go out (d) they keep glowing
7. 7.💡 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 2 and 5 are taken out of their holders. How many bulbs glow?
8. 8.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) to make bulbs dim (d) each gets full voltage
9. 9.💡 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 1 and 6 are taken out of their holders. How many bulbs glow?
10. 10.💡 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. How many bulbs glow?
11. 11.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
12. 12.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
13. 13.💡 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 1 glow? (a) No (b) Yes
14. 14.💡 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 1 is taken out of its holder. How many bulbs glow?
15. 15.💡 3 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?
16. 16.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) own switch for each bulb (d) bulbs share the voltage
17. 17.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
18. 18.💡 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?
19. 19.💡 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?
20. 20.Which of these is true of a series circuit? (a) each gets the full volts (b) a single current path (c) one out, the rest glow (d) many paths for current
21. 21.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
23. 23.💡 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
24. 24.Which of these is true of a series circuit? (a) a break stops every bulb (b) own switch for each bulb (c) used in house wiring (d) many paths for current
25. 25.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
26. 26.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
27. 27.Which of these is true of a series circuit? (a) bulbs share the voltage (b) each gets the full volts (c) used in house wiring (d) own switch for each bulb
28. 28.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
29. 29.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
30. 30.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
32. 32.💡 3 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?
33. 33.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
34. 34.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
35. 35.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
36. 36.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
37. 37.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
38. 38.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) one out, the rest glow (d) a break stops every bulb
39. 39.💡 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 3 are taken out of their holders. How many bulbs glow?
40. 40.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =

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