Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 234 · 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.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
2. 2.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
3. 3.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
4. 4.💡 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
5. 5.💡 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) the same (c) brighter
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they keep glowing (d) they explode
7. 7.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) many paths for current (c) a break stops every bulb (d) bulbs share the voltage
8. 8.💡 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?
9. 9.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
10. 10.💡 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?
11. 11.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
12. 12.💡 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 4 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
13. 13.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
14. 14.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) one out, the rest glow (d) a break stops every bulb
15. 15.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
16. 16.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) one bulb out, all go out (d) used in house wiring
17. 17.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
18. 18.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) used in house wiring
19. 19.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
20. 20.💡 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. Does bulb 2 glow? (a) Yes (b) No
21. 21.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
22. 22.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
23. 23.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) own switch for each bulb (d) one bulb out, all go out
24. 24.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
25. 25.💡 5 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
26. 26.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) each gets the full volts (d) bulbs share the voltage
27. 27.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
28. 28.💡 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 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
29. 29.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) a break stops every bulb (d) used in house wiring
30. 30.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
31. 31.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
32. 32.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
33. 33.True or false: “a single current path” is true of a series circuit. (a) False (b) True
34. 34.💡 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?
35. 35.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
36. 36.💡 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?
37. 37.💡 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?
38. 38.💡 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
39. 39.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
40. 40.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True

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