Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 313 · 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.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
2. 2.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) a break stops every bulb (d) many paths for current
3. 3.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
4. 4.💡 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. Does bulb 1 glow? (a) Yes (b) No
5. 5.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
6. 6.💡 Why is house wiring done in parallel? (a) so all go off together (b) to make bulbs dim (c) each gets full voltage (d) to save copper only
7. 7.💡 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
8. 8.💡 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
9. 9.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) many paths for current (d) a break stops every bulb
10. 10.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
11. 11.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
12. 12.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
13. 13.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) one bulb out, all go out (d) used in house wiring
14. 14.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
15. 15.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
16. 16.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) a single current path (d) used in house wiring
17. 17.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
18. 18.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) each gets the full volts
19. 19.💡 3 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
20. 20.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
21. 21.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
22. 22.💡 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?
23. 23.💡 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. Bulb 4 is taken out of its holder. How many bulbs glow?
24. 24.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
25. 25.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
26. 26.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
27. 27.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
28. 28.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) many paths for current (d) one bulb out, all go out
29. 29.💡 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 6 glow? (a) Yes (b) No
30. 30.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
32. 32.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
33. 33.💡 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
34. 34.💡 2 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
35. 35.💡 A battery lights 2 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
36. 36.Which of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) one out, the rest glow (d) a break stops every bulb
37. 37.💡 6 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) each gets the full volts (b) own switch for each bulb (c) used in house wiring (d) bulbs share the voltage
39. 39.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
40. 40.💡 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?

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