Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 249 · 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.Which of these is true of a series circuit? (a) one bulb out, all go out (b) used in house wiring (c) many paths for current (d) own switch for each bulb
2. 2.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
3. 3.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) each gets full voltage (d) to make bulbs dim
4. 4.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
5. 5.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they explode (c) they get dimmer (d) they keep glowing
7. 7.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
8. 8.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) one out, the rest glow
9. 9.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
10. 10.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
11. 11.💡 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 4 are taken out of their holders. How many bulbs glow?
12. 12.💡 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
13. 13.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
14. 14.💡 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) brighter (c) dimmer
15. 15.Which of these is true of a series circuit? (a) used in house wiring (b) a break stops every bulb (c) own switch for each bulb (d) many paths for current
16. 16.💡 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?
17. 17.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) each gets the full volts (c) a single current path (d) one bulb out, all go out
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. All the bulbs are in place. How many bulbs glow?
19. 19.💡 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. Does bulb 1 glow? (a) No (b) Yes
20. 20.💡 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?
21. 21.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
22. 22.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) a single current path (d) bulbs share the voltage
23. 23.True or false: “a single current path” is true of a series circuit. (a) False (b) True
24. 24.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
25. 25.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
26. 26.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
27. 27.💡 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?
28. 28.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
29. 29.💡 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?
30. 30.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
31. 31.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
32. 32.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
33. 33.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
34. 34.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
35. 35.💡 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 5 is taken out of its holder. Does bulb 4 glow? (a) No (b) Yes
36. 36.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
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. Bulbs 1 and 3 are taken out of their holders. How many bulbs glow?
38. 38.💡 6 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
39. 39.Which of these is true of a series circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) many paths for current (d) each gets the full volts
40. 40.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) many paths for current (d) bulbs share the voltage

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