Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 304 · 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) many paths for current (b) a break stops every bulb (c) each gets the full volts (d) used in house wiring
2. 2.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
3. 3.💡 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 1 is taken out of its holder. How many bulbs glow?
4. 4.💡 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
5. 5.True or false: “a single current path” is true of a series circuit. (a) True (b) False
6. 6.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
7. 7.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) each gets the full volts (c) bulbs share the voltage (d) a single current path
8. 8.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
9. 9.Which of these is true of a series circuit? (a) one bulb out, all go out (b) used in house wiring (c) many paths for current (d) each gets the full volts
10. 10.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
11. 11.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
12. 12.💡 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
13. 13.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
14. 14.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
15. 15.💡 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
16. 16.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
17. 17.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
18. 18.💡 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?
19. 19.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) a break stops every bulb (c) a single current path (d) bulbs share the voltage
20. 20.Which of these is true of a series circuit? (a) bulbs share the voltage (b) own switch for each bulb (c) one out, the rest glow (d) used in house wiring
21. 21.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
22. 22.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
23. 23.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
24. 24.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
25. 25.💡 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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
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 1 and 3 are taken out of their holders. How many bulbs glow?
27. 27.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
28. 28.💡 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 5 are taken out of their holders. How many bulbs glow?
29. 29.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
30. 30.💡 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?
31. 31.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
32. 32.💡 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?
33. 33.💡 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. Does bulb 5 glow? (a) No (b) Yes
34. 34.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
35. 35.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
36. 36.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
37. 37.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) a single current path (d) many paths for current
38. 38.💡 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 5 is taken out of its holder. Does bulb 4 glow? (a) No (b) Yes
39. 39.💡 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
40. 40.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) a single current path (d) used in house wiring

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