Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 140 · 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.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
2. 2.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
3. 3.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) one bulb out, all go out (d) a single current path
4. 4.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) a break stops every bulb (d) one out, the rest glow
5. 5.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
6. 6.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) many paths for current
7. 7.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
8. 8.💡 6 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
9. 9.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) each gets full voltage (d) so all go off together
10. 10.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
11. 11.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
12. 12.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) a break stops every bulb (d) own switch for each bulb
13. 13.Which of these is true of a series circuit? (a) used in house wiring (b) each gets the full volts (c) many paths for current (d) a single current path
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.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
16. 16.💡 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?
17. 17.💡 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?
18. 18.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
19. 19.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) each gets the full volts
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.💡 6 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.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) bulbs share the voltage (d) used in house wiring
23. 23.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
24. 24.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
25. 25.💡 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 6 are taken out of their holders. Does bulb 1 glow? (a) Yes (b) No
26. 26.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
27. 27.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
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.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
30. 30.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
31. 31.True or false: “a single current path” is true of a series circuit. (a) True (b) False
32. 32.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
33. 33.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) one out, the rest glow (d) many paths for current
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. Bulb 3 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
35. 35.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
36. 36.💡 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?
37. 37.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
38. 38.💡 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
39. 39.💡 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
40. 40.💡 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?

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