Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 257 · 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: “used in house wiring” is true of a series circuit. (a) False (b) True
2. 2.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they get dimmer (d) they keep glowing
3. 3.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
4. 4.💡 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
5. 5.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) one out, the rest glow (d) bulbs share the voltage
6. 6.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
7. 7.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
8. 8.💡 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) dimmer (c) brighter
9. 9.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
10. 10.💡 A battery lights 4 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
11. 11.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) each gets the full volts (d) bulbs share the voltage
12. 12.💡 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?
13. 13.💡 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?
14. 14.Which of these is true of a parallel circuit? (a) many paths for current (b) a break stops every bulb (c) one bulb out, all go out (d) a single current path
15. 15.💡 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?
16. 16.Which of these is true of a series circuit? (a) used in house wiring (b) many paths for current (c) a break stops every bulb (d) each gets the full volts
17. 17.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
18. 18.Which of these is true of a series circuit? (a) each gets the full volts (b) own switch for each bulb (c) used in house wiring (d) a single current path
19. 19.💡 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?
20. 20.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
21. 21.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
22. 22.Which of these is true of a series circuit? (a) each gets the full volts (b) own switch for each bulb (c) many paths for current (d) one bulb out, all go out
23. 23.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
24. 24.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
25. 25.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
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) brighter (b) dimmer (c) the same
27. 27.💡 2 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
28. 28.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
30. 30.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
31. 31.Which of these is true of a parallel circuit? (a) used in house wiring (b) a single current path (c) one bulb out, all go out (d) a break stops every bulb
32. 32.💡 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?
33. 33.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
34. 34.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
35. 35.💡 3 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 3 glow? (a) No (b) Yes
36. 36.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
37. 37.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
38. 38.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) own switch for each bulb (d) a break stops every bulb
39. 39.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
40. 40.💡 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?

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