Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 94 · 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.💡 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 3 glow? (a) No (b) Yes
2. 2.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) many paths for current (c) a single current path (d) one bulb out, all go out
3. 3.Which of these is true of a series circuit? (a) used in house wiring (b) each gets the full volts (c) one out, the rest glow (d) one bulb out, all go out
4. 4.💡 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 3 are taken out of their holders. How many bulbs glow?
5. 5.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they all go out (d) they explode
6. 6.💡 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) brighter (c) dimmer
7. 7.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
8. 8.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
9. 9.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
10. 10.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
11. 11.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
12. 12.💡 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
13. 13.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
14. 14.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
15. 15.💡 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?
16. 16.💡 2 identical bulbs are joined in parallel across a 6 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. Bulb 4 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
18. 18.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
19. 19.True or false: “a single current path” is true of a series circuit. (a) False (b) True
20. 20.💡 5 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?
21. 21.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
22. 22.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) bulbs share the voltage (d) own switch for each bulb
23. 23.Which of these is true of a series circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) used in house wiring (d) many paths for current
24. 24.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
25. 25.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
26. 26.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) a single current path (d) each gets the full volts
27. 27.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) one bulb out, all go out (d) a single current path
28. 28.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
29. 29.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
30. 30.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
31. 31.💡 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
32. 32.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
33. 33.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) one bulb out, all go out (d) a single current path
34. 34.💡 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 2 are taken out of their holders. How many bulbs glow?
35. 35.💡 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?
36. 36.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
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.💡 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?
39. 39.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
40. 40.💡 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?

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