Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 186 · 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: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
2. 2.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) bulbs share the voltage (d) many paths for current
3. 3.Which of these is true of a series circuit? (a) used in house wiring (b) a single current path (c) many paths for current (d) own switch for each bulb
4. 4.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they explode (d) they get dimmer
5. 5.💡 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 5 and 6 are taken out of their holders. How many bulbs glow?
6. 6.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to save copper only (d) to make bulbs dim
7. 7.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
8. 8.💡 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) No (b) Yes
9. 9.💡 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
10. 10.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
11. 11.💡 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?
12. 12.💡 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
13. 13.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
14. 14.💡 4 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?
15. 15.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
16. 16.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
17. 17.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) used in house wiring (c) a single current path (d) a break stops every bulb
18. 18.💡 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
19. 19.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
20. 20.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
21. 21.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) own switch for each bulb (c) bulbs share the voltage (d) a single current path
22. 22.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
23. 23.True or false: “a break stops every bulb” 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. Bulb 3 is taken out of its holder. How many bulbs glow?
25. 25.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) one bulb out, all go out (d) one out, the rest glow
26. 26.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
27. 27.💡 5 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.Which of these is true of a series circuit? (a) used in house wiring (b) each gets the full volts (c) a break stops every bulb (d) many paths for current
29. 29.💡 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?
30. 30.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
32. 32.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
33. 33.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
34. 34.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) one out, the rest glow (d) one bulb out, all go out
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 break stops every bulb (d) a single current path
36. 36.💡 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?
37. 37.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
38. 38.Which of these is true of a parallel circuit? (a) each gets the full volts (b) a break stops every bulb (c) one bulb out, all go out (d) bulbs share the voltage
39. 39.True or false: “a single current path” is true of a series circuit. (a) False (b) True
40. 40.True or false: “many paths for current” is true of a series circuit. (a) True (b) False

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