Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 185 · 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) a break stops every bulb (b) many paths for current (c) used in house wiring (d) one out, the rest glow
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) brighter (b) dimmer (c) the same
3. 3.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
4. 4.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
5. 5.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
6. 6.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) bulbs share the voltage (d) used in house wiring
7. 7.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
8. 8.Which of these is true of a series circuit? (a) each gets the full volts (b) used in house wiring (c) own switch for each bulb (d) one bulb out, all go out
9. 9.💡 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. Bulb 2 is taken out of its holder. How many bulbs glow?
10. 10.💡 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) the same (c) dimmer
11. 11.💡 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
12. 12.💡 5 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?
13. 13.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
14. 14.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
15. 15.Which of these is true of a parallel circuit? (a) used in house wiring (b) one bulb out, all go out (c) a break stops every bulb (d) bulbs share the voltage
16. 16.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
17. 17.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they explode (d) they all go out
18. 18.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
19. 19.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
20. 20.Which of these is true of a series circuit? (a) a single current path (b) each gets the full volts (c) own switch for each bulb (d) used in house wiring
21. 21.💡 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
22. 22.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) each gets the full volts (d) a break stops every bulb
23. 23.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a single current path (d) many paths for current
24. 24.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) own switch for each bulb (d) one bulb out, all go out
25. 25.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
26. 26.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
27. 27.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
28. 28.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
29. 29.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
30. 30.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
32. 32.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) one bulb out, all go out (d) one out, the rest glow
33. 33.💡 4 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
34. 34.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
35. 35.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
36. 36.💡 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?
37. 37.💡 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?
38. 38.💡 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?
39. 39.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
40. 40.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False

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