Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 233 · 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.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
2. 2.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
3. 3.💡 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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
4. 4.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) a break stops every bulb (d) one out, the rest glow
5. 5.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they all go out (d) they get dimmer
6. 6.💡 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) brighter (c) the same
7. 7.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
8. 8.💡 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
9. 9.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
10. 10.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
11. 11.💡 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 2 are taken out of their holders. Does bulb 5 glow? (a) No (b) Yes
12. 12.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
13. 13.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
14. 14.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
15. 15.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) own switch for each bulb (d) a single current path
16. 16.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) own switch for each bulb (d) a single current path
17. 17.💡 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 2 is taken out of its holder. How many bulbs glow?
18. 18.Which of these is true of a parallel circuit? (a) each gets the full volts (b) a single current path (c) one bulb out, all go out (d) a break stops every bulb
19. 19.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
20. 20.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
21. 21.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
22. 22.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one out, the rest glow (c) a single current path (d) one bulb out, all go out
23. 23.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
24. 24.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
25. 25.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
26. 26.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
27. 27.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
28. 28.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
30. 30.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
31. 31.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
32. 32.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
33. 33.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
34. 34.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
35. 35.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) many paths for current (c) a single current path (d) bulbs share the voltage
36. 36.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) each gets the full volts (d) one bulb out, all go out
37. 37.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
38. 38.💡 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?
39. 39.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
40. 40.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =

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