Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 180 · 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 parallel circuit? (a) bulbs share the voltage (b) each gets the full volts (c) a break stops every bulb (d) one bulb out, all go out
2. 2.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
3. 3.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) bulbs share the voltage (d) used in house wiring
4. 4.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
5. 5.💡 4 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?
6. 6.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
7. 7.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
8. 8.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) many paths for current
9. 9.Which of these is true of a series circuit? (a) each gets the full volts (b) own switch for each bulb (c) a single current path (d) many paths for current
10. 10.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
11. 11.Which of these is true of a series circuit? (a) own switch for each bulb (b) a break stops every bulb (c) used in house wiring (d) many paths for current
12. 12.💡 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
13. 13.💡 A battery lights 2 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
14. 14.💡 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 1 and 2 are taken out of their holders. How many bulbs glow?
15. 15.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
16. 16.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
17. 17.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
18. 18.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
19. 19.💡 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. All the bulbs are in place. Does bulb 1 glow? (a) Yes (b) No
20. 20.💡 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. All the bulbs are in place. Does bulb 3 glow? (a) No (b) Yes
21. 21.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
22. 22.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
23. 23.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) one bulb out, all go out (d) each gets the full volts
24. 24.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) one bulb out, all go out (d) a single current path
25. 25.💡 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) dimmer (c) brighter
26. 26.💡 A battery lights 3 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
27. 27.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
28. 28.💡 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 2 are taken out of their holders. How many bulbs glow?
29. 29.💡 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
30. 30.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.💡 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?
32. 32.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
33. 33.💡 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 3 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
34. 34.💡 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?
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 1 and 4 are taken out of their holders. Does bulb 3 glow? (a) No (b) Yes
36. 36.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
37. 37.💡 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 3 is taken out of its holder. How many bulbs glow?
38. 38.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) one out, the rest glow (d) a break stops every bulb
39. 39.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) many paths for current (d) bulbs share the voltage
40. 40.💡 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?

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