Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 106 · 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.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
2. 2.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) so all go off together (c) to make bulbs dim (d) to save copper only
3. 3.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
4. 4.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
5. 5.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
6. 6.Which of these is true of a parallel circuit? (a) each gets the full volts (b) a single current path (c) bulbs share the voltage (d) a break stops every bulb
7. 7.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) each gets the full volts (d) bulbs share the voltage
8. 8.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
9. 9.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they explode (d) they get dimmer
10. 10.💡 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
11. 11.Which of these is true of a parallel circuit? (a) a single current path (b) one out, the rest glow (c) bulbs share the voltage (d) one bulb out, all go out
12. 12.💡 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
13. 13.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
14. 14.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
15. 15.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) many paths for current (d) a single current path
16. 16.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) bulbs share the voltage (d) used in house wiring
17. 17.💡 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 5 is taken out of its holder. Does bulb 6 glow? (a) No (b) Yes
18. 18.💡 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?
19. 19.💡 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. Does bulb 1 glow? (a) Yes (b) No
20. 20.💡 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?
21. 21.💡 4 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 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 4 are taken out of their holders. How many bulbs glow?
23. 23.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
24. 24.💡 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 3 and 5 are taken out of their holders. How many bulbs glow?
25. 25.Which of these is true of a series circuit? (a) a single current path (b) own switch for each bulb (c) each gets the full volts (d) one out, the rest glow
26. 26.💡 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 4 is taken out of its holder. How many bulbs glow?
27. 27.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
28. 28.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
29. 29.Which of these is true of a series circuit? (a) each gets the full volts (b) a break stops every bulb (c) used in house wiring (d) own switch for each bulb
30. 30.💡 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?
31. 31.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) own switch for each bulb
32. 32.💡 3 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
33. 33.💡 3 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: “used in house wiring” is true of a series circuit. (a) True (b) False
35. 35.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
36. 36.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
37. 37.💡 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?
38. 38.💡 4 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
39. 39.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
40. 40.True or false: “a single current path” is true of a series circuit. (a) False (b) True

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