Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 203 · 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) own switch for each bulb (b) one bulb out, all go out (c) used in house wiring (d) each gets the full volts
2. 2.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
3. 3.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
4. 4.💡 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 1 is taken out of its holder. How many bulbs glow?
5. 5.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they keep glowing (d) they get dimmer
7. 7.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
8. 8.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) a break stops every bulb (d) bulbs share the voltage
9. 9.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) own switch for each bulb (d) a single current path
10. 10.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) each gets the full volts (d) a break stops every bulb
11. 11.💡 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. How many bulbs glow?
12. 12.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) each gets the full volts (d) a break stops every bulb
13. 13.💡 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?
14. 14.💡 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
15. 15.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) a break stops every bulb (c) bulbs share the voltage (d) a single current path
16. 16.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
17. 17.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
18. 18.💡 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?
19. 19.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) to make bulbs dim (d) each gets full voltage
20. 20.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
21. 21.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
22. 22.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
23. 23.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
24. 24.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) used in house wiring (d) a single current path
25. 25.💡 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?
26. 26.💡 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
27. 27.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
28. 28.💡 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
29. 29.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
30. 30.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
31. 31.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
32. 32.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
33. 33.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
34. 34.💡 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?
35. 35.Which of these is true of a series circuit? (a) bulbs share the voltage (b) used in house wiring (c) each gets the full volts (d) many paths for current
36. 36.💡 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. Does bulb 4 glow? (a) Yes (b) No
37. 37.💡 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 6 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
38. 38.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
39. 39.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
40. 40.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =

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