Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 252 · 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) so all go off together (b) to save copper only (c) each gets full voltage (d) to make bulbs dim
2. 2.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
3. 3.💡 6 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?
4. 4.Which of these is true of a parallel circuit? (a) used in house wiring (b) bulbs share the voltage (c) a single current path (d) a break stops every bulb
5. 5.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 single current path
6. 6.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
7. 7.💡 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) dimmer (c) brighter
8. 8.💡 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?
9. 9.Which of these is true of a series circuit? (a) a single current path (b) one out, the rest glow (c) many paths for current (d) used in house wiring
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.💡 3 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
12. 12.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
13. 13.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
14. 14.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) one out, the rest glow (d) bulbs share the voltage
15. 15.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
16. 16.💡 6 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
17. 17.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
18. 18.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) a break stops every bulb (d) bulbs share the voltage
19. 19.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
20. 20.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they all go out (d) they keep glowing
21. 21.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
22. 22.💡 A battery lights 5 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.True or false: “a single current path” is true of a series circuit. (a) True (b) False
24. 24.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
25. 25.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
26. 26.💡 3 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: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
28. 28.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) bulbs share the voltage (d) each gets the full volts
29. 29.💡 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) the same (c) dimmer
30. 30.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) a single current path (d) a break stops every bulb
31. 31.💡 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?
32. 32.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
33. 33.💡 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. Bulb 2 is taken out of its holder. How many bulbs glow?
34. 34.💡 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?
35. 35.💡 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) dimmer (c) brighter
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.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
38. 38.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) used in house wiring (d) a break stops every bulb
39. 39.💡 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. Bulb 4 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
40. 40.Which of these is true of a series circuit? (a) used in house wiring (b) own switch for each bulb (c) many paths for current (d) one bulb out, all go out

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