Electronics Worksheet: Parallel Circuits

Electronics lesson 9: Parallel circuits · Set 206 · 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.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) so all go off together (d) each gets full voltage
2. 2.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) a break stops every bulb (d) used in house wiring
3. 3.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
4. 4.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they get dimmer (d) they keep glowing
5. 5.💡 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. Does bulb 2 glow? (a) No (b) Yes
6. 6.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
7. 7.💡 4 identical bulbs are in parallel and each one takes 0.25 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) one bulb out, all go out (c) used in house wiring (d) many paths for current
9. 9.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
10. 10.💡 2 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
11. 11.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
12. 12.💡 4 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
13. 13.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) each gets the full volts (d) bulbs share the voltage
14. 14.💡 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 3 are taken out of their holders. Does bulb 1 glow? (a) No (b) Yes
15. 15.💡 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. Does bulb 1 glow? (a) Yes (b) No
16. 16.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) own switch for each bulb (d) bulbs share the voltage
17. 17.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
18. 18.💡 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?
19. 19.💡 6 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
20. 20.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
21. 21.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 single current path
22. 22.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
23. 23.💡 5 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?
24. 24.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
25. 25.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
26. 26.💡 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 1 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
27. 27.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
28. 28.💡 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. Bulb 2 is taken out of its holder. How many bulbs glow?
29. 29.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
30. 30.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
32. 32.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) used in house wiring (c) a single current path (d) a break stops every bulb
33. 33.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
34. 34.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
35. 35.💡 6 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
36. 36.💡 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. Bulb 3 is taken out of its holder. How many bulbs glow?
37. 37.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
38. 38.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 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?
40. 40.💡 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 3 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No

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