Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 175 · 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 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: “many paths for current” is true of a parallel circuit. (a) True (b) False
3. 3.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
4. 4.💡 Why is house wiring done in parallel? (a) to save copper only (b) each gets full voltage (c) so all go off together (d) to make bulbs dim
5. 5.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they keep glowing (d) they get dimmer
6. 6.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
7. 7.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
8. 8.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
9. 9.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
10. 10.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
11. 11.💡 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?
12. 12.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) own switch for each bulb (d) one bulb out, all go out
13. 13.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
14. 14.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) a single current path (d) many paths for current
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) one bulb out, all go out (b) bulbs share the voltage (c) used in house wiring (d) a single current path
17. 17.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
18. 18.💡 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. Bulb 1 is taken out of its holder. How many bulbs glow?
19. 19.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
20. 20.💡 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
21. 21.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a single current path (d) many paths for current
22. 22.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
23. 23.💡 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) brighter (c) dimmer
24. 24.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) a break stops every bulb (d) each gets the full volts
25. 25.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a break stops every bulb (d) own switch for each bulb
26. 26.True or false: “a single current path” is true of a series circuit. (a) True (b) False
27. 27.💡 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?
28. 28.💡 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 1 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
29. 29.💡 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?
30. 30.💡 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 1 is taken out of its holder. How many bulbs glow?
31. 31.Which of these is true of a parallel circuit? (a) each gets the full volts (b) one bulb out, all go out (c) bulbs share the voltage (d) a single current path
32. 32.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
33. 33.True or false: “bulbs share the voltage” is true of a series 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 3 and 4 are taken out of their holders. Does bulb 2 glow? (a) Yes (b) No
35. 35.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
36. 36.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
37. 37.💡 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 2 and 3 are taken out of their holders. How many bulbs glow?
38. 38.💡 6 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?
39. 39.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
40. 40.Which of these is true of a series circuit? (a) each gets the full volts (b) bulbs share the voltage (c) many paths for current (d) own switch for each bulb

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