Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 176 · 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.Which of these is true of a series circuit? (a) used in house wiring (b) one bulb out, all go out (c) one out, the rest glow (d) each gets the full volts
2. 2.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
3. 3.Which of these is true of a series circuit? (a) bulbs share the voltage (b) used in house wiring (c) one out, the rest glow (d) each gets the full volts
4. 4.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
5. 5.💡 A battery lights 4 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
6. 6.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
7. 7.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) each gets the full volts (d) used in house wiring
8. 8.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
9. 9.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) a break stops every bulb
10. 10.💡 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
11. 11.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
12. 12.💡 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
13. 13.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they all go out (d) they explode
14. 14.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
15. 15.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) a single current path (d) own switch for each bulb
16. 16.💡 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?
17. 17.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) used in house wiring (d) a single current path
18. 18.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
19. 19.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
20. 20.💡 A battery lights 2 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
21. 21.💡 6 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?
22. 22.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
23. 23.💡 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. All the bulbs are in place. Does bulb 2 glow? (a) Yes (b) No
24. 24.💡 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. Bulb 1 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
25. 25.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) used in house wiring (d) a break stops every bulb
26. 26.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
27. 27.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
28. 28.💡 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. Bulb 2 is taken out of its holder. Does bulb 3 glow? (a) No (b) Yes
29. 29.💡 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 2 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
30. 30.💡 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?
31. 31.💡 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. Bulb 2 is taken out of its holder. How many bulbs glow?
32. 32.True or false: “a single current path” is true of a series circuit. (a) False (b) True
33. 33.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
34. 34.💡 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 2 is taken out of its holder. How many bulbs glow?
35. 35.💡 2 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
36. 36.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) each gets the full volts (d) bulbs share the voltage
37. 37.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
38. 38.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 3 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
40. 40.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =

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