Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 92 · 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 parallel circuit. (a) True (b) False
2. 2.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) a break stops every bulb (d) each gets the full volts
3. 3.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
4. 4.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) a break stops every bulb (d) one out, the rest glow
5. 5.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
6. 6.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) each gets full voltage (d) to save copper only
7. 7.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they keep glowing (d) they all go out
8. 8.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
9. 9.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) used in house wiring (d) one bulb out, all go out
10. 10.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
11. 11.💡 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
12. 12.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
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 1 is taken out of its holder. Does bulb 4 glow? (a) No (b) Yes
14. 14.💡 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
15. 15.Which of these is true of a series circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) own switch for each bulb (d) each gets the full volts
16. 16.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
17. 17.💡 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?
18. 18.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
19. 19.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) a single current path (d) each gets the full volts
20. 20.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
21. 21.💡 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?
22. 22.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) many paths for current (c) a break stops every bulb (d) one bulb out, all go out
23. 23.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
24. 24.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
25. 25.💡 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?
26. 26.💡 6 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?
27. 27.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
28. 28.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
29. 29.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
30. 30.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) each gets the full volts (c) one bulb out, all go out (d) a break stops every bulb
31. 31.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
32. 32.💡 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?
33. 33.💡 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 1 and 4 are taken out of their holders. How many bulbs glow?
34. 34.True or false: “a single current path” is true of a series circuit. (a) False (b) True
35. 35.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
36. 36.💡 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
37. 37.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
38. 38.💡 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 2 and 4 are taken out of their holders. Does bulb 5 glow? (a) Yes (b) No
39. 39.💡 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?
40. 40.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =

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