Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 61 · 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) one bulb out, all go out (b) a break stops every bulb (c) used in house wiring (d) bulbs share the voltage
2. 2.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) one out, the rest glow (d) bulbs share the voltage
3. 3.💡 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 1 is taken out of its holder. How many bulbs glow?
4. 4.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) one bulb out, all go out (d) own switch for each bulb
5. 5.💡 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?
6. 6.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
7. 7.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
8. 8.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
9. 9.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
10. 10.💡 Why is house wiring done in parallel? (a) so all go off together (b) to make bulbs dim (c) to save copper only (d) each gets full voltage
11. 11.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) bulbs share the voltage (d) one bulb out, all go out
12. 12.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
13. 13.Which of these is true of a series circuit? (a) a break stops every bulb (b) used in house wiring (c) one out, the rest glow (d) own switch for each bulb
14. 14.💡 A battery lights 3 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.💡 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?
16. 16.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
17. 17.💡 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 1 and 6 are taken out of their holders. How many bulbs glow?
18. 18.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
19. 19.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
20. 20.💡 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?
21. 21.Which of these is true of a series circuit? (a) bulbs share the voltage (b) many paths for current (c) one out, the rest glow (d) used in house wiring
22. 22.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
23. 23.💡 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?
24. 24.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
25. 25.💡 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 1 glow? (a) Yes (b) No
26. 26.True or false: “a single current path” is true of a series circuit. (a) True (b) False
27. 27.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
28. 28.Which of these is true of a parallel circuit? (a) each gets the full volts (b) a single current path (c) one bulb out, all go out (d) a break stops every bulb
29. 29.💡 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?
30. 30.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) a single current path (d) own switch for each bulb
31. 31.💡 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 4 are taken out of their holders. Does bulb 3 glow? (a) No (b) Yes
32. 32.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
33. 33.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
34. 34.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
35. 35.💡 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) the same (c) brighter
36. 36.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
37. 37.💡 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?
38. 38.💡 2 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 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?
40. 40.💡 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 1 is taken out of its holder. How many bulbs glow?

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