Electronics Worksheet: Parallel Circuits

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

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