Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 118 · 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 0.5 A. What total current (in amperes) comes from the battery? =
2. 2.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to save copper only (c) so all go off together (d) to make bulbs dim
3. 3.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) one bulb out, all go out (d) many paths for current
4. 4.💡 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 1 and 3 are taken out of their holders. How many bulbs glow?
5. 5.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
6. 6.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) own switch for each bulb
7. 7.Which of these is true of a parallel circuit? (a) a single current path (b) each gets the full volts (c) one bulb out, all go out (d) bulbs share the voltage
8. 8.💡 3 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
9. 9.💡 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?
10. 10.💡 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?
11. 11.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they all go out (d) they explode
12. 12.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) bulbs share the voltage (d) one out, the rest glow
13. 13.💡 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
14. 14.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
15. 15.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
16. 16.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) used in house wiring (d) one bulb out, all go out
17. 17.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
18. 18.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) many paths for current (d) bulbs share the voltage
19. 19.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
20. 20.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
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) brighter (b) dimmer (c) the same
22. 22.💡 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
23. 23.💡 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?
24. 24.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
25. 25.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
26. 26.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
27. 27.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
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. Bulb 1 is taken out of its holder. How many bulbs glow?
29. 29.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
30. 30.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
31. 31.True or false: “a single current path” is true of a series circuit. (a) False (b) True
32. 32.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
33. 33.Which of these is true of a series circuit? (a) own switch for each bulb (b) a single current path (c) used in house wiring (d) one out, the rest glow
34. 34.💡 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. 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.💡 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 3 and 4 are taken out of their holders. How many bulbs glow?
37. 37.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
38. 38.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
39. 39.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
40. 40.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True

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