Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 330 · 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 series circuit? (a) each gets the full volts (b) a break stops every bulb (c) own switch for each bulb (d) many paths for current
2. 2.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
3. 3.💡 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?
4. 4.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
5. 5.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) one out, the rest glow (d) a single current path
6. 6.💡 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. Bulbs 5 and 6 are taken out of their holders. Does bulb 3 glow? (a) No (b) Yes
7. 7.Which of these is true of a series circuit? (a) each gets the full volts (b) bulbs share the voltage (c) own switch for each bulb (d) one out, the rest glow
8. 8.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) a single current path (d) one out, the rest glow
9. 9.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
10. 10.💡 4 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?
11. 11.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) a break stops every bulb (d) each gets the full volts
12. 12.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
13. 13.💡 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?
14. 14.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
15. 15.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) many paths for current (d) one out, the rest glow
16. 16.💡 3 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
17. 17.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) a break stops every bulb (d) one bulb out, all go out
18. 18.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
19. 19.💡 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?
20. 20.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
21. 21.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 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. How many bulbs glow?
23. 23.Which of these is true of a parallel circuit? (a) used in house wiring (b) a single current path (c) a break stops every bulb (d) one bulb out, all go out
24. 24.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
25. 25.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
26. 26.💡 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. Bulbs 3 and 4 are taken out of their holders. Does bulb 2 glow? (a) Yes (b) No
27. 27.💡 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 3 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
28. 28.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
29. 29.💡 4 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?
30. 30.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
31. 31.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
32. 32.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
33. 33.💡 6 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
34. 34.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
35. 35.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
36. 36.💡 5 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
37. 37.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
38. 38.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they keep glowing (d) they all go out
39. 39.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
40. 40.💡 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?

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