Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 213 · 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.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) many paths for current (c) a break stops every bulb (d) a single current path
2. 2.💡 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?
3. 3.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) to save copper only (c) each gets full voltage (d) so all go off together
4. 4.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) each gets the full volts (d) one bulb out, all go out
5. 5.💡 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 1 and 4 are taken out of their holders. How many bulbs glow?
6. 6.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
7. 7.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
8. 8.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
9. 9.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) own switch for each bulb (d) a single current path
10. 10.Which of these is true of a series circuit? (a) a break stops every bulb (b) own switch for each bulb (c) many paths for current (d) each gets the full volts
11. 11.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) own switch for each bulb
12. 12.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they explode (d) they all go out
13. 13.💡 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 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
14. 14.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
15. 15.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) used in house wiring
16. 16.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) one out, the rest glow (d) a break stops every bulb
17. 17.💡 5 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
18. 18.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
19. 19.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
20. 20.💡 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
21. 21.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
22. 22.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
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. Bulbs 4 and 5 are taken out of their holders. How many bulbs glow?
24. 24.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
25. 25.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) each gets the full volts (c) a single current path (d) a break stops every bulb
26. 26.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
27. 27.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?
28. 28.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 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?
30. 30.💡 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
31. 31.💡 5 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?
32. 32.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
33. 33.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
34. 34.💡 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?
35. 35.💡 3 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: “a break stops every bulb” is true of a series circuit. (a) False (b) True
37. 37.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
38. 38.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
40. 40.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False

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