Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 198 · 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: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
2. 2.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
3. 3.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
4. 4.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
5. 5.Which of these is true of a series circuit? (a) each gets the full volts (b) one bulb out, all go out (c) one out, the rest glow (d) own switch for each bulb
6. 6.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
7. 7.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
8. 8.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) many paths for current (d) one bulb out, all go out
9. 9.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) a break stops every bulb (d) used in house wiring
10. 10.💡 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
11. 11.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) a single current path (d) own switch for each bulb
12. 12.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) bulbs share the voltage (d) many paths for current
13. 13.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
14. 14.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
15. 15.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) so all go off together (d) to save copper only
16. 16.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) bulbs share the voltage (d) each gets the full volts
17. 17.💡 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?
18. 18.💡 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 3 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
19. 19.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) a single current path (c) a break stops every bulb (d) one bulb out, all go out
20. 20.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
21. 21.💡 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
22. 22.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
23. 23.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) bulbs share the voltage (d) one out, the rest glow
24. 24.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
25. 25.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
26. 26.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
27. 27.💡 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
28. 28.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 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?
30. 30.💡 2 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 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 1 glow? (a) Yes (b) No
32. 32.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
33. 33.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
34. 34.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
35. 35.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
36. 36.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
37. 37.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
38. 38.💡 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?
39. 39.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
40. 40.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True

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