Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 282 · 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.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
2. 2.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
3. 3.💡 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?
4. 4.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
5. 5.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) one out, the rest glow (d) a single current path
6. 6.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) one out, the rest glow (d) bulbs share the voltage
7. 7.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) each gets the full volts (d) a single current path
8. 8.💡 6 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?
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) dimmer (b) brighter (c) the same
10. 10.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
11. 11.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they keep glowing (d) they explode
12. 12.💡 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
13. 13.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
14. 14.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) one bulb out, all go out (d) own switch for each bulb
15. 15.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
16. 16.💡 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?
17. 17.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
18. 18.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
19. 19.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
20. 20.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
21. 21.💡 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?
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 2 is taken out of its holder. How many bulbs glow?
23. 23.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) each gets the full volts (d) a break stops every bulb
24. 24.💡 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?
25. 25.💡 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
26. 26.💡 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
27. 27.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) many paths for current (d) one out, the rest glow
28. 28.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
29. 29.💡 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
30. 30.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
31. 31.True or false: “a single current path” is true of a series circuit. (a) False (b) True
32. 32.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
33. 33.Which of these is true of a series circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) each gets the full volts (d) used in house wiring
34. 34.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
35. 35.💡 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?
36. 36.💡 6 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?
37. 37.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
38. 38.💡 5 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?
39. 39.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
40. 40.💡 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?

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