Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 49 · 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 (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
2. 2.💡 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?
3. 3.💡 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
4. 4.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
5. 5.💡 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
6. 6.💡 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. Bulb 1 is taken out of its holder. How many bulbs glow?
7. 7.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) own switch for each bulb (d) one bulb out, all go out
8. 8.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
9. 9.💡 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 2 and 3 are taken out of their holders. Does bulb 1 glow? (a) Yes (b) No
10. 10.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
11. 11.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
12. 12.💡 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
13. 13.💡 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. All the bulbs are in place. Does bulb 2 glow? (a) No (b) Yes
14. 14.💡 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?
15. 15.Which of these is true of a series circuit? (a) each gets the full volts (b) own switch for each bulb (c) one out, the rest glow (d) a break stops every bulb
16. 16.💡 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. All the bulbs are in place. How many bulbs glow?
17. 17.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) a single current path (d) one out, the rest glow
18. 18.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
19. 19.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) each gets full voltage (d) so all go off together
20. 20.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
21. 21.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 single current path
22. 22.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
23. 23.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
24. 24.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
25. 25.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
26. 26.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
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 4.5 V battery (ideal wires). How many volts does each bulb get? =
29. 29.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
30. 30.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
31. 31.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
32. 32.Which of these is true of a series circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) many paths for current (d) own switch for each bulb
33. 33.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
34. 34.💡 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?
35. 35.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
36. 36.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
37. 37.💡 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. Bulb 6 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
38. 38.💡 2 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
40. 40.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =

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