Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 284 · 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.💡 3 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
2. 2.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) each gets full voltage (d) to save copper only
3. 3.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
4. 4.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
5. 5.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
6. 6.💡 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. All the bulbs are in place. How many bulbs glow?
7. 7.Which of these is true of a parallel circuit? (a) each gets the full volts (b) a break stops every bulb (c) bulbs share the voltage (d) a single current path
8. 8.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
9. 9.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a single current path (d) many paths for current
10. 10.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
11. 11.💡 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?
12. 12.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
13. 13.💡 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
14. 14.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they get dimmer (d) they keep glowing
15. 15.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) each gets the full volts (d) a single current path
16. 16.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
17. 17.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) used in house wiring (d) a single current path
18. 18.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
19. 19.💡 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?
20. 20.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
21. 21.💡 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?
22. 22.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
23. 23.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) each gets the full volts (d) used in house wiring
24. 24.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) one out, the rest glow
25. 25.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
26. 26.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) own switch for each bulb (c) a single current path (d) one bulb out, all go out
27. 27.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
28. 28.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
29. 29.💡 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?
30. 30.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
31. 31.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
32. 32.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) a break stops every bulb (d) each gets the full volts
33. 33.💡 6 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?
34. 34.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) bulbs share the voltage (d) used in house wiring
35. 35.💡 4 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
36. 36.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
37. 37.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
38. 38.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
39. 39.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
40. 40.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True

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