Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 153 · 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.💡 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
2. 2.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
3. 3.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) a single current path (d) used in house wiring
4. 4.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
5. 5.💡 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
6. 6.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
7. 7.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they keep glowing (d) they all go out
8. 8.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
9. 9.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) a single current path (c) a break stops every bulb (d) bulbs share the voltage
10. 10.💡 Why is house wiring done in parallel? (a) to save copper only (b) each gets full voltage (c) so all go off together (d) to make bulbs dim
11. 11.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
12. 12.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
13. 13.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) a break stops every bulb (d) a single current path
14. 14.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
15. 15.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
16. 16.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) own switch for each bulb (d) bulbs share the voltage
17. 17.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) a break stops every bulb (d) one bulb out, all go out
18. 18.💡 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 2 and 5 are taken out of their holders. How many bulbs glow?
19. 19.💡 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?
20. 20.💡 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?
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.💡 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. All the bulbs are in place. Does bulb 5 glow? (a) Yes (b) No
23. 23.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
24. 24.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) a break stops every bulb (d) each gets the full volts
25. 25.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
26. 26.Which of these is true of a series circuit? (a) each gets the full volts (b) a break stops every bulb (c) many paths for current (d) own switch for each bulb
27. 27.💡 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?
28. 28.Which of these is true of a series circuit? (a) one bulb out, all go out (b) many paths for current (c) used in house wiring (d) each gets the full volts
29. 29.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
30. 30.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
31. 31.💡 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
32. 32.💡 4 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?
33. 33.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
34. 34.💡 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 6 are taken out of their holders. Does bulb 2 glow? (a) Yes (b) No
35. 35.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) many paths for current (d) bulbs share the voltage
36. 36.💡 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) the same (c) dimmer
37. 37.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
38. 38.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
39. 39.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
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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