Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 276 · 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 1 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
2. 2.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
3. 3.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
4. 4.Which of these is true of a parallel circuit? (a) each gets the full volts (b) one bulb out, all go out (c) a break stops every bulb (d) a single current path
5. 5.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) to save copper only (d) so all go off together
6. 6.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
7. 7.💡 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
8. 8.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
9. 9.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
10. 10.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
11. 11.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
12. 12.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
13. 13.Which of these is true of a series circuit? (a) a single current path (b) many paths for current (c) one out, the rest glow (d) each gets the full volts
14. 14.💡 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?
15. 15.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) used in house wiring (d) bulbs share the voltage
16. 16.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
17. 17.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
18. 18.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
19. 19.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) bulbs share the voltage (d) used in house wiring
20. 20.💡 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 6 is taken out of its holder. How many bulbs glow?
21. 21.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 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
23. 23.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
24. 24.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
25. 25.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
26. 26.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
27. 27.💡 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 5 are taken out of their holders. Does bulb 2 glow? (a) No (b) Yes
28. 28.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
29. 29.True or false: “a single current path” is true of a series circuit. (a) True (b) False
30. 30.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
31. 31.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) bulbs share the voltage (d) own switch for each bulb
32. 32.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) many paths for current (d) a single current path
33. 33.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
34. 34.💡 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?
35. 35.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
36. 36.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
37. 37.💡 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) the same (c) dimmer
38. 38.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
39. 39.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
40. 40.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?

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