Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 179 · 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 parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) used in house wiring (d) bulbs share the voltage
2. 2.💡 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) dimmer (c) brighter
3. 3.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
4. 4.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
5. 5.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they keep glowing (d) they explode
6. 6.💡 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 3 and 5 are taken out of their holders. How many bulbs glow?
7. 7.💡 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?
8. 8.Which of these is true of a series circuit? (a) each gets the full volts (b) bulbs share the voltage (c) many paths for current (d) own switch for each bulb
9. 9.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
10. 10.Which of these is true of a series circuit? (a) a break stops every bulb (b) used in house wiring (c) many paths for current (d) one out, the rest glow
11. 11.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
12. 12.Which of these is true of a series circuit? (a) a single current path (b) each gets the full volts (c) one out, the rest glow (d) many paths for current
13. 13.💡 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 5 is taken out of its holder. How many bulbs glow?
14. 14.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
15. 15.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
16. 16.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
17. 17.💡 3 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
18. 18.💡 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
19. 19.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
20. 20.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
21. 21.💡 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. Does bulb 2 glow? (a) No (b) Yes
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. Bulb 1 is taken out of its holder. How many bulbs glow?
23. 23.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
24. 24.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
25. 25.Which of these is true of a series circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) each gets the full volts (d) one out, the rest glow
26. 26.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
27. 27.💡 3 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?
28. 28.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
29. 29.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) so all go off together (d) to save copper only
30. 30.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
31. 31.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
32. 32.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
33. 33.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
34. 34.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
35. 35.💡 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?
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 2 are taken out of their holders. Does bulb 4 glow? (a) No (b) Yes
37. 37.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) each gets the full volts
38. 38.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
39. 39.True or false: “a single current path” is true of a series circuit. (a) True (b) False
40. 40.💡 4 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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