Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 64 · 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.💡 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. Bulbs 2 and 6 are taken out of their holders. How many bulbs glow?
2. 2.💡 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
3. 3.💡 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 1 is taken out of its holder. How many bulbs glow?
4. 4.💡 A battery lights 5 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.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
6. 6.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
7. 7.💡 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?
8. 8.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
9. 9.Which of these is true of a series circuit? (a) many paths for current (b) a single current path (c) one out, the rest glow (d) each gets the full volts
10. 10.💡 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) the same (c) brighter
11. 11.Which of these is true of a series circuit? (a) used in house wiring (b) one bulb out, all go out (c) many paths for current (d) each gets the full volts
12. 12.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
13. 13.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) bulbs share the voltage (d) many paths for current
14. 14.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
15. 15.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
16. 16.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) many paths for current
17. 17.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
18. 18.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
19. 19.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
20. 20.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one out, the rest glow (c) bulbs share the voltage (d) one bulb out, all go out
21. 21.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 5 of the switches are OFF and the rest are ON. How many bulbs glow?
22. 22.💡 5 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?
23. 23.💡 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?
24. 24.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
25. 25.💡 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 1 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
26. 26.💡 A battery lights 4 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
27. 27.💡 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?
28. 28.Which of these is true of a series circuit? (a) many paths for current (b) a break stops every bulb (c) each gets the full volts (d) used in house wiring
29. 29.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
30. 30.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) a break stops every bulb (d) each gets the full volts
31. 31.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
32. 32.True or false: “a single current path” is true of a series circuit. (a) True (b) False
33. 33.💡 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?
34. 34.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) used in house wiring (d) a break stops every bulb
35. 35.💡 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?
36. 36.💡 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?
37. 37.💡 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
38. 38.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
39. 39.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
40. 40.True or false: “many paths for current” is true of a series circuit. (a) False (b) True

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