Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 93 · 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: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
2. 2.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) each gets the full volts (d) many paths for current
3. 3.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
4. 4.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) one bulb out, all go out (d) used in house wiring
5. 5.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
6. 6.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
7. 7.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
8. 8.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
9. 9.💡 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
10. 10.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
11. 11.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) each gets the full volts (d) a single current path
12. 12.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
13. 13.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) bulbs share the voltage (d) a break stops every bulb
14. 14.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) a break stops every bulb (d) bulbs share the voltage
15. 15.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
16. 16.Which of these is true of a series circuit? (a) bulbs share the voltage (b) own switch for each bulb (c) many paths for current (d) each gets the full volts
17. 17.Which of these is true of a series circuit? (a) a single current path (b) many paths for current (c) each gets the full volts (d) used in house wiring
18. 18.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
19. 19.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
20. 20.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
21. 21.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
22. 22.💡 A battery lights 4 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
23. 23.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
24. 24.💡 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
25. 25.💡 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 2 and 3 are taken out of their holders. How many bulbs glow?
26. 26.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
27. 27.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
28. 28.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
29. 29.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
30. 30.💡 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) brighter (c) the same
31. 31.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
32. 32.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
33. 33.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
34. 34.💡 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?
35. 35.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
36. 36.💡 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?
37. 37.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
38. 38.💡 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?
39. 39.💡 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?
40. 40.💡 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?

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