Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 66 · 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.💡 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
2. 2.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) to make bulbs dim (d) each gets full voltage
3. 3.💡 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 2 and 4 are taken out of their holders. Does bulb 3 glow? (a) No (b) Yes
4. 4.True or false: “one bulb out, all go out” is true of a series 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 single current path (c) one out, the rest glow (d) a break stops every bulb
6. 6.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
7. 7.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
8. 8.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) a single current path (d) one bulb out, all go out
9. 9.💡 4 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
10. 10.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) used in house wiring
11. 11.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
12. 12.Which of these is true of a series circuit? (a) each gets the full volts (b) own switch for each bulb (c) many paths for current (d) bulbs share the voltage
13. 13.💡 3 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
14. 14.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
15. 15.💡 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?
16. 16.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) a single current path (d) used in house wiring
17. 17.💡 A battery lights 4 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
18. 18.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
19. 19.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
20. 20.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
21. 21.💡 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. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
22. 22.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
23. 23.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
24. 24.💡 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) brighter (c) the same
25. 25.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
26. 26.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
27. 27.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
28. 28.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
30. 30.💡 3 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: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
32. 32.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 5 of the switches are OFF and the rest are ON. How many bulbs glow?
33. 33.Which of these is true of a series circuit? (a) many paths for current (b) one bulb out, all go out (c) used in house wiring (d) own switch for each bulb
34. 34.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) many paths for current (d) a break stops every bulb
35. 35.💡 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?
36. 36.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) own switch for each bulb (d) a break stops every bulb
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.💡 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. How many bulbs glow?
39. 39.💡 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?
40. 40.True or false: “a single current path” is true of a series circuit. (a) False (b) True

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