Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 158 · 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.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they get dimmer (d) they keep glowing
2. 2.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
3. 3.💡 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 2 and 5 are taken out of their holders. How many bulbs glow?
4. 4.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
5. 5.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) bulbs share the voltage (d) each gets the full volts
6. 6.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
7. 7.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) each gets full voltage (d) to save copper only
8. 8.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) own switch for each bulb (d) a single current path
9. 9.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
10. 10.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
11. 11.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
12. 12.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
13. 13.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
14. 14.💡 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?
15. 15.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
16. 16.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
17. 17.💡 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) dimmer (c) the same
18. 18.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
19. 19.💡 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?
20. 20.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
21. 21.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
23. 23.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) one out, the rest glow (d) a break stops every bulb
24. 24.💡 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?
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. Bulbs 1 and 4 are taken out of their holders. How many bulbs glow?
26. 26.💡 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?
27. 27.💡 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?
28. 28.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a break stops every bulb (d) many paths for current
29. 29.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
30. 30.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) one out, the rest glow (c) a break stops every bulb (d) a single current path
31. 31.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
32. 32.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
33. 33.💡 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
34. 34.💡 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 3 and 4 are taken out of their holders. How many bulbs glow?
35. 35.💡 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 3 is taken out of its holder. How many bulbs glow?
36. 36.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
37. 37.💡 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) dimmer (c) the same
38. 38.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) each gets the full volts (c) one bulb out, all go out (d) a single current path
39. 39.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
40. 40.💡 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

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