Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 218 · 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.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
2. 2.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
3. 3.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
4. 4.💡 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
5. 5.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to save copper only (c) so all go off together (d) to make bulbs dim
6. 6.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
7. 7.Which of these is true of a parallel circuit? (a) a single current path (b) own switch for each bulb (c) a break stops every bulb (d) one bulb out, all go out
8. 8.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) many paths for current (c) a single current path (d) one bulb out, all go out
9. 9.Which of these is true of a parallel circuit? (a) used in house wiring (b) a break stops every bulb (c) a single current path (d) one bulb out, all go out
10. 10.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
11. 11.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
12. 12.💡 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?
13. 13.Which of these is true of a series circuit? (a) one bulb out, all go out (b) many paths for current (c) used in house wiring (d) own switch for each bulb
14. 14.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
15. 15.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) one out, the rest glow (d) bulbs share the voltage
16. 16.💡 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 5 is taken out of its holder. Does bulb 4 glow? (a) No (b) Yes
17. 17.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) a single current path (d) used in house wiring
18. 18.💡 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?
19. 19.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
20. 20.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
21. 21.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
22. 22.Which of these is true of a series circuit? (a) own switch for each bulb (b) a break stops every bulb (c) each gets the full volts (d) one out, the rest glow
23. 23.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
24. 24.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they all go out (d) they get dimmer
25. 25.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
26. 26.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
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 4 and 5 are taken out of their holders. How many bulbs glow?
28. 28.💡 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
29. 29.💡 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. How many bulbs glow?
30. 30.💡 A battery lights 3 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
31. 31.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) each gets the full volts (c) bulbs share the voltage (d) a break stops every bulb
32. 32.💡 4 identical bulbs are joined in parallel across a 3 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) True (b) False
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.💡 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?
36. 36.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
37. 37.True or false: “a single current path” is true of a series circuit. (a) False (b) True
38. 38.💡 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 1 and 3 are taken out of their holders. How many bulbs glow?
39. 39.💡 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?
40. 40.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True

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