Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 149 · 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: “used in house wiring” is true of a parallel circuit. (a) False (b) True
2. 2.💡 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
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.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
5. 5.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they all go out (d) they explode
6. 6.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) each gets the full volts (d) one bulb out, all go out
7. 7.💡 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?
8. 8.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) own switch for each bulb (c) a single current path (d) a break stops every bulb
9. 9.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
10. 10.💡 2 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
11. 11.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
12. 12.💡 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?
13. 13.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) bulbs share the voltage (d) many paths for current
14. 14.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) a single current path (d) one out, the rest glow
15. 15.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) many paths for current (d) bulbs share the voltage
16. 16.💡 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
17. 17.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
18. 18.Which of these is true of a series circuit? (a) one out, the rest glow (b) a single current path (c) used in house wiring (d) each gets the full volts
19. 19.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
20. 20.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
21. 21.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
22. 22.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) one bulb out, all go out (d) many paths for current
23. 23.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
24. 24.💡 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
25. 25.💡 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. Bulb 1 is taken out of its holder. How many bulbs glow?
26. 26.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
27. 27.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
28. 28.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
29. 29.💡 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?
30. 30.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
31. 31.💡 A battery lights 4 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
32. 32.💡 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?
33. 33.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
34. 34.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
35. 35.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
36. 36.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
37. 37.True or false: “a single current path” is true of a series circuit. (a) True (b) False
38. 38.💡 A battery lights 3 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
39. 39.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
40. 40.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False

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