Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 244 · 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 get dimmer (c) they all go out (d) they keep glowing
2. 2.💡 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) brighter (c) dimmer
3. 3.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
4. 4.💡 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 2 and 3 are taken out of their holders. How many bulbs glow?
5. 5.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
6. 6.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
7. 7.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) one out, the rest glow (d) a single current path
8. 8.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) to save copper only (c) so all go off together (d) each gets full voltage
9. 9.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
10. 10.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
11. 11.💡 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. Bulb 1 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
12. 12.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
13. 13.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) each gets the full volts (d) used in house wiring
14. 14.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
15. 15.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
16. 16.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
17. 17.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) each gets the full volts (d) a break stops every bulb
18. 18.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
19. 19.💡 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?
20. 20.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
21. 21.💡 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. Bulb 1 is taken out of its holder. How many bulbs glow?
22. 22.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
23. 23.💡 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?
24. 24.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) many paths for current (d) bulbs share the voltage
25. 25.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
26. 26.💡 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?
27. 27.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
28. 28.Which of these is true of a series circuit? (a) a single current path (b) one out, the rest glow (c) each gets the full volts (d) own switch for each bulb
29. 29.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
30. 30.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) one out, the rest glow (d) bulbs share the voltage
31. 31.💡 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?
32. 32.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
33. 33.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
34. 34.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
35. 35.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
36. 36.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
37. 37.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
38. 38.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
39. 39.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
40. 40.Which of these is true of a series circuit? (a) a break stops every bulb (b) many paths for current (c) used in house wiring (d) each gets the full volts

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