Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 68 · 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 parallel circuit? (a) used in house wiring (b) one bulb out, all go out (c) a single current path (d) bulbs share the voltage
2. 2.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one out, the rest glow (c) a single current path (d) one bulb out, all go out
3. 3.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
4. 4.💡 Why is house wiring done in parallel? (a) to save copper only (b) each gets full voltage (c) to make bulbs dim (d) so all go off together
5. 5.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) a break stops every bulb (d) used in house wiring
6. 6.💡 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. How many bulbs glow?
7. 7.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) each gets the full volts (d) a single current path
8. 8.💡 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
9. 9.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
10. 10.💡 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?
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 parallel circuit? (a) one bulb out, all go out (b) many paths for current (c) bulbs share the voltage (d) a break stops every bulb
13. 13.💡 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) the same (c) dimmer
14. 14.💡 3 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?
15. 15.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they all go out (d) they get dimmer
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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
17. 17.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
18. 18.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
19. 19.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) own switch for each bulb (d) one bulb out, all go out
20. 20.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
21. 21.💡 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?
22. 22.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
23. 23.💡 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
24. 24.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
25. 25.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
26. 26.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) own switch for each bulb (d) bulbs share the voltage
27. 27.💡 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?
28. 28.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
30. 30.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
31. 31.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
32. 32.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?
33. 33.💡 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 4 are taken out of their holders. How many bulbs glow?
34. 34.💡 6 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?
35. 35.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
36. 36.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
37. 37.💡 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 4 is taken out of its holder. How many bulbs glow?
38. 38.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 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 1 and 3 are taken out of their holders. Does bulb 5 glow? (a) Yes (b) No
40. 40.Which of these is true of a series circuit? (a) bulbs share the voltage (b) each gets the full volts (c) one out, the rest glow (d) own switch for each bulb

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