Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 214 · 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.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they explode (d) they all go out
2. 2.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) own switch for each bulb
3. 3.💡 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. How many bulbs glow?
4. 4.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) bulbs share the voltage
5. 5.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) bulbs share the voltage (d) many paths for current
6. 6.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
7. 7.💡 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) brighter (c) dimmer
8. 8.💡 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. Does bulb 1 glow? (a) No (b) Yes
9. 9.💡 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?
10. 10.💡 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
11. 11.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
12. 12.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
13. 13.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
14. 14.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
15. 15.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) many paths for current (d) one bulb out, all go out
16. 16.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
17. 17.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
18. 18.Which of these is true of a parallel circuit? (a) a single current path (b) own switch for each bulb (c) bulbs share the voltage (d) a break stops every bulb
19. 19.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
20. 20.Which of these is true of a series circuit? (a) a single current path (b) own switch for each bulb (c) one out, the rest glow (d) many paths for current
21. 21.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
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. Bulbs 1 and 3 are taken out of their holders. How many bulbs glow?
23. 23.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
24. 24.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
25. 25.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
26. 26.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
27. 27.💡 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. Does bulb 2 glow? (a) Yes (b) No
28. 28.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) one bulb out, all go out (d) each gets the full volts
29. 29.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) a single current path (d) a break stops every bulb
30. 30.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
31. 31.💡 5 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?
32. 32.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
33. 33.💡 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?
34. 34.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
35. 35.💡 3 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
36. 36.💡 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?
37. 37.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
38. 38.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
39. 39.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
40. 40.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =

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