Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 81 · 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.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
2. 2.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
3. 3.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) a single current path (c) one bulb out, all go out (d) bulbs share the voltage
4. 4.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they get dimmer (d) they all go out
5. 5.Which of these is true of a series circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) used in house wiring (d) each gets the full volts
6. 6.💡 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
7. 7.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) many paths for current (d) one bulb out, all go out
8. 8.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
9. 9.💡 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
10. 10.💡 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) the same (c) brighter
11. 11.💡 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?
12. 12.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
13. 13.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
14. 14.Which of these is true of a series circuit? (a) a break stops every bulb (b) own switch for each bulb (c) one out, the rest glow (d) each gets the full volts
15. 15.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
16. 16.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
17. 17.💡 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) dimmer (c) brighter
18. 18.💡 6 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?
19. 19.💡 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?
20. 20.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
21. 21.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
22. 22.💡 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. How many bulbs glow?
23. 23.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) one bulb out, all go out (d) one out, the rest glow
24. 24.Which of these is true of a series circuit? (a) a single current path (b) each gets the full volts (c) own switch for each bulb (d) one out, the rest glow
25. 25.💡 5 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?
26. 26.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
27. 27.💡 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. How many bulbs glow?
28. 28.💡 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?
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 1 is taken out of its holder. How many bulbs glow?
30. 30.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) one out, the rest glow (d) a break stops every bulb
31. 31.💡 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?
32. 32.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
33. 33.Which of these is true of a parallel circuit? (a) each gets the full volts (b) a single current path (c) a break stops every bulb (d) bulbs share the voltage
34. 34.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
35. 35.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) used in house wiring (c) one bulb out, all go out (d) bulbs share the voltage
36. 36.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
37. 37.💡 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) dimmer (c) the same
38. 38.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
39. 39.💡 3 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
40. 40.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True

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