Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 196 · 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: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
2. 2.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they explode (d) they get dimmer
3. 3.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
4. 4.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) used in house wiring
5. 5.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
6. 6.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) so all go off together (d) to save copper only
7. 7.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
8. 8.Which of these is true of a series circuit? (a) used in house wiring (b) bulbs share the voltage (c) each gets the full volts (d) one out, the rest glow
9. 9.💡 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 2 is taken out of its holder. How many bulbs glow?
10. 10.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
11. 11.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
12. 12.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
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. Bulb 1 is taken out of its holder. How many bulbs glow?
14. 14.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
15. 15.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
16. 16.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) one bulb out, all go out (d) own switch for each bulb
17. 17.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
18. 18.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
19. 19.💡 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
20. 20.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
21. 21.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
22. 22.💡 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 3 are taken out of their holders. How many bulbs glow?
23. 23.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) each gets the full volts (d) one bulb out, all go out
24. 24.💡 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 4 and 6 are taken out of their holders. Does bulb 5 glow? (a) Yes (b) No
25. 25.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
26. 26.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
27. 27.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
28. 28.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) a single current path (d) used in house wiring
29. 29.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
30. 30.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
31. 31.💡 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?
32. 32.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
33. 33.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
34. 34.💡 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?
35. 35.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) a break stops every bulb (d) each gets the full volts
36. 36.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) a single current path (d) each gets the full volts
37. 37.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
38. 38.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) one out, the rest glow (d) one bulb out, all go out
39. 39.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
40. 40.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =

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