Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 261 · 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.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
2. 2.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
3. 3.💡 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) brighter (c) dimmer
4. 4.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
5. 5.💡 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 3 are taken out of their holders. Does bulb 6 glow? (a) Yes (b) No
6. 6.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
7. 7.💡 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 2 is taken out of its holder. How many bulbs glow?
8. 8.💡 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 3 are taken out of their holders. How many bulbs glow?
9. 9.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
10. 10.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
11. 11.True or false: “a single current path” is true of a series circuit. (a) False (b) True
12. 12.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) bulbs share the voltage (d) each gets the full volts
13. 13.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) a single current path (d) each gets the full volts
14. 14.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they explode (c) they keep glowing (d) they get dimmer
15. 15.💡 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) the same (c) dimmer
16. 16.💡 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
17. 17.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) one out, the rest glow (d) a break stops every bulb
18. 18.💡 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?
19. 19.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
20. 20.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) to save copper only (c) so all go off together (d) each gets full voltage
21. 21.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
22. 22.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
23. 23.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
24. 24.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
25. 25.Which of these is true of a series circuit? (a) used in house wiring (b) one bulb out, all go out (c) each gets the full volts (d) own switch for each bulb
26. 26.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
27. 27.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
28. 28.💡 2 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 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?
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) the same (b) brighter (c) dimmer
31. 31.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) a break stops every bulb (d) own switch for each bulb
32. 32.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) used in house wiring (c) bulbs share the voltage (d) a break stops every bulb
33. 33.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) one bulb out, all go out (d) bulbs share the voltage
34. 34.💡 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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
35. 35.💡 6 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?
36. 36.💡 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?
37. 37.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
38. 38.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
39. 39.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
40. 40.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False

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