Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 247 · 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: “each gets the full volts” is true of a series circuit. (a) True (b) False
2. 2.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
3. 3.💡 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
4. 4.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
5. 5.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) each gets the full volts (d) own switch for each bulb
6. 6.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
7. 7.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) each gets the full volts (d) one bulb out, all go out
8. 8.💡 A battery lights 2 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
9. 9.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) one out, the rest glow (d) bulbs share the voltage
10. 10.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
11. 11.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) used in house wiring (d) bulbs share the voltage
12. 12.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
13. 13.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
14. 14.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
15. 15.💡 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 3 are taken out of their holders. How many bulbs glow?
16. 16.💡 3 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
17. 17.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
18. 18.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
19. 19.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
20. 20.💡 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?
21. 21.💡 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 1 and 6 are taken out of their holders. How many bulbs glow?
22. 22.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
23. 23.💡 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 4 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
24. 24.Which of these is true of a series circuit? (a) bulbs share the voltage (b) many paths for current (c) own switch for each bulb (d) used in house wiring
25. 25.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
26. 26.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
27. 27.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
28. 28.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) used in house wiring (d) a single current path
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. All the bulbs are in place. How many bulbs glow?
30. 30.💡 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 2 and 4 are taken out of their holders. How many bulbs glow?
31. 31.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) many paths for current (c) a single current path (d) bulbs share the voltage
32. 32.💡 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. How many bulbs glow?
33. 33.💡 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?
34. 34.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
35. 35.Which of these is true of a parallel circuit? (a) own switch for each bulb (b) a single current path (c) one bulb out, all go out (d) a break stops every bulb
36. 36.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
37. 37.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
38. 38.💡 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?
39. 39.💡 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 2 and 6 are taken out of their holders. Does bulb 1 glow? (a) No (b) Yes
40. 40.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True

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