Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 260 · 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 1 and 5 are taken out of their holders. How many bulbs glow?
2. 2.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to save copper only (c) to make bulbs dim (d) so all go off together
3. 3.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a single current path (d) one out, the rest glow
4. 4.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
5. 5.💡 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) dimmer (c) the same
6. 6.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) own switch for each bulb (d) a single current path
7. 7.Which of these is true of a series circuit? (a) many paths for current (b) a break stops every bulb (c) one out, the rest glow (d) used in house wiring
8. 8.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) own switch for each bulb
9. 9.💡 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. Does bulb 2 glow? (a) Yes (b) No
10. 10.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) each gets the full volts (c) a single current path (d) one bulb out, all go out
11. 11.Which of these is true of a parallel circuit? (a) many paths for current (b) a break stops every bulb (c) one bulb out, all go out (d) a single current path
12. 12.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
13. 13.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
14. 14.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
15. 15.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
16. 16.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
17. 17.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) bulbs share the voltage (d) one out, the rest glow
18. 18.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
19. 19.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
20. 20.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) a break stops every bulb (d) one bulb out, all go out
21. 21.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 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?
23. 23.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
24. 24.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
25. 25.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
26. 26.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
27. 27.💡 2 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
28. 28.💡 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) brighter (c) the same
29. 29.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
30. 30.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
31. 31.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
32. 32.Which of these is true of a parallel circuit? (a) a single current path (b) used in house wiring (c) bulbs share the voltage (d) a break stops every bulb
33. 33.💡 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 4 are taken out of their holders. How many bulbs glow?
34. 34.💡 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
35. 35.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
36. 36.💡 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 4 are taken out of their holders. How many bulbs glow?
37. 37.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
38. 38.💡 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?
39. 39.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
40. 40.💡 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 3 and 5 are taken out of their holders. Does bulb 4 glow? (a) Yes (b) No

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