Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 187 · 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) a break stops every bulb (b) each gets the full volts (c) one out, the rest glow (d) own switch for each bulb
2. 2.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
3. 3.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) one bulb out, all go out (d) each gets the full volts
4. 4.💡 Why is house wiring done in parallel? (a) so all go off together (b) to make bulbs dim (c) to save copper only (d) each gets full voltage
5. 5.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
6. 6.💡 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) brighter (c) the same
7. 7.💡 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 5 are taken out of their holders. Does bulb 1 glow? (a) Yes (b) No
8. 8.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
9. 9.💡 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
10. 10.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
11. 11.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
12. 12.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
13. 13.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
14. 14.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
15. 15.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they get dimmer (d) they all go out
16. 16.Which of these is true of a series circuit? (a) used in house wiring (b) a single current path (c) own switch for each bulb (d) one out, the rest glow
17. 17.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
18. 18.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
19. 19.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) one bulb out, all go out (d) bulbs share the voltage
20. 20.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
21. 21.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
23. 23.💡 2 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
24. 24.Which of these is true of a series circuit? (a) bulbs share the voltage (b) each gets the full volts (c) many paths for current (d) one out, the rest glow
25. 25.💡 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 4 and 5 are taken out of their holders. How many bulbs glow?
26. 26.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
27. 27.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) own switch for each bulb (d) a single current path
28. 28.💡 A battery lights 3 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
29. 29.💡 5 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?
30. 30.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
31. 31.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
32. 32.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
34. 34.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one out, the rest glow (c) one bulb out, all go out (d) a single current path
35. 35.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
36. 36.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
37. 37.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) each gets the full volts (c) bulbs share the voltage (d) a break stops every bulb
38. 38.💡 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 2 and 3 are taken out of their holders. Does bulb 1 glow? (a) Yes (b) No
39. 39.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
40. 40.💡 4 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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