Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 271 · 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: “own switch for each bulb” 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 all go out (b) they get dimmer (c) they keep glowing (d) they explode
3. 3.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to save copper only (d) to make bulbs dim
4. 4.💡 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 5 and 6 are taken out of their holders. How many bulbs glow?
5. 5.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
6. 6.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) bulbs share the voltage (d) many paths for current
7. 7.💡 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) dimmer (c) brighter
8. 8.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) each gets the full volts (c) bulbs share the voltage (d) a single current path
9. 9.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) many paths for current (d) a break stops every bulb
10. 10.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) used in house wiring (d) a break stops every bulb
11. 11.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) used in house wiring (d) one bulb out, all go out
12. 12.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
13. 13.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
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) the same (b) dimmer (c) brighter
15. 15.💡 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
16. 16.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) one out, the rest glow (c) a single current path (d) bulbs share the voltage
17. 17.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
18. 18.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) each gets the full volts (d) a single current path
19. 19.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
20. 20.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
21. 21.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
22. 22.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
23. 23.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
24. 24.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
25. 25.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
26. 26.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) a break stops every bulb (d) each gets the full volts
27. 27.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
28. 28.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 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?
30. 30.💡 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?
31. 31.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
32. 32.💡 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?
33. 33.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
34. 34.💡 A battery lights 5 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
35. 35.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
36. 36.💡 4 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?
37. 37.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
38. 38.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
39. 39.💡 5 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?
40. 40.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 5 of the switches are OFF and the rest are ON. How many bulbs glow?

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