Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 142 · 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.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) so all go off together (d) each gets full voltage
2. 2.💡 4 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 4 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
4. 4.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
5. 5.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
6. 6.💡 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
7. 7.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
8. 8.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) one out, the rest glow (c) bulbs share the voltage (d) a single current path
9. 9.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they keep glowing (d) they get dimmer
10. 10.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
11. 11.💡 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
12. 12.💡 A battery lights 3 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
13. 13.Which of these is true of a parallel circuit? (a) many paths for current (b) bulbs share the voltage (c) a single current path (d) one bulb out, all go out
14. 14.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
15. 15.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) many paths for current (d) a single current path
16. 16.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
17. 17.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
18. 18.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
19. 19.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) a break stops every bulb (d) bulbs share the voltage
20. 20.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
21. 21.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 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?
23. 23.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
24. 24.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
25. 25.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
26. 26.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
27. 27.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
28. 28.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
29. 29.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
30. 30.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
32. 32.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
33. 33.True or false: “a single current path” is true of a series circuit. (a) True (b) False
34. 34.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
35. 35.💡 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 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
36. 36.Which of these is true of a parallel circuit? (a) used in house wiring (b) a single current path (c) one bulb out, all go out (d) a break stops every bulb
37. 37.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
38. 38.Which of these is true of a series circuit? (a) bulbs share the voltage (b) many paths for current (c) each gets the full volts (d) one out, the rest glow
39. 39.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
40. 40.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =

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