Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 144 · 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.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they keep glowing (d) they explode
2. 2.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
3. 3.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
4. 4.💡 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. How many bulbs glow?
5. 5.💡 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
6. 6.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
7. 7.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) used in house wiring (d) one bulb out, all go out
8. 8.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) a single current path (d) used in house wiring
9. 9.💡 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?
10. 10.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
11. 11.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
12. 12.💡 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 2 is taken out of its holder. How many bulbs glow?
13. 13.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
14. 14.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
15. 15.💡 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?
16. 16.💡 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
17. 17.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
18. 18.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) many paths for current (c) bulbs share the voltage (d) a single current path
19. 19.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
20. 20.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
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.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) own switch for each bulb
23. 23.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) used in house wiring (d) a single current path
24. 24.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) a break stops every bulb (d) one out, the rest glow
25. 25.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
26. 26.True or false: “a single current path” is true of a series circuit. (a) True (b) False
27. 27.💡 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
28. 28.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
29. 29.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
30. 30.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
31. 31.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
32. 32.💡 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
33. 33.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
34. 34.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
35. 35.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
36. 36.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
37. 37.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
38. 38.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
39. 39.💡 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. All the bulbs are in place. How many bulbs glow?
40. 40.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) bulbs share the voltage (d) used in house wiring

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