Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 324 · 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 joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
2. 2.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) each gets full voltage (d) to make bulbs dim
3. 3.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
4. 4.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
5. 5.Which of these is true of a series circuit? (a) own switch for each bulb (b) a single current path (c) one out, the rest glow (d) many paths for current
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they keep glowing (d) they all go out
7. 7.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
8. 8.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
9. 9.💡 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 2 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
10. 10.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
11. 11.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
12. 12.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) many paths for current (d) a single current path
13. 13.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
14. 14.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
15. 15.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
16. 16.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
17. 17.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
18. 18.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
19. 19.💡 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?
20. 20.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) used in house wiring (c) a break stops every bulb (d) a single current path
21. 21.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
22. 22.True or false: “a single current path” is true of a series circuit. (a) True (b) False
23. 23.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
24. 24.💡 A battery lights 3 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
25. 25.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
26. 26.💡 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. All the bulbs are in place. Does bulb 2 glow? (a) No (b) Yes
27. 27.💡 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 1 is taken out of its holder. How many bulbs glow?
28. 28.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) one bulb out, all go out (d) many paths for current
29. 29.💡 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
30. 30.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
31. 31.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) bulbs share the voltage (d) each gets the full volts
32. 32.💡 A battery lights 5 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
33. 33.💡 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?
34. 34.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) a break stops every bulb
35. 35.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) own switch for each bulb (d) a single current path
36. 36.Which of these is true of a series circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) used in house wiring (d) own switch for each bulb
37. 37.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
38. 38.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
40. 40.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =

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