Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 481 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.💡 In a series circuit, how many paths does the current have? (a) two (b) one for each bulb (c) none (d) one
2. 2.🔘 Which kind of switch slides side to side? (a) a slide switch (b) a push button (c) a tilt switch (d) a toggle switch
3. 3.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.True or false: two or more cell symbols is the symbol for a switch. (a) False (b) True
5. 5.True or false: if a wire has come loose, the circuit is closed and current flows. (a) False (b) True
6. 6.⚠️ Is it safe to take cells out after use? (a) safe (b) not safe
7. 7.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
8. 8.True or false: a loudspeaker mainly gives out heat. (a) False (b) True
9. 9.Which of these is safe? (a) keep drinks far away (b) open a phone charger (c) touch a switch when wet (d) use mains for a project
10. 10.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
11. 11.Which of these gives us electricity? (a) a solar panel (b) a computer (c) a refrigerator (d) a television
12. 12.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
13. 13.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is OFF. Does the bulb glow? (a) Yes (b) No
14. 14.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
15. 15.True or false: two equal parallel lines is the symbol for a battery. (a) True (b) False
16. 16.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
17. 17.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) friction (c) sound (d) a magnet
18. 18.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) many paths for current (d) one bulb out, all go out
19. 19.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
20. 20.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
21. 21.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
22. 22.🔍 Which is the odd one out? (a) stay away from pylons (b) keep drinks far away (c) use a cable with cuts (d) stop if a part gets hot
23. 23.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
24. 24.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
25. 25.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
26. 26.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) to make bulbs dim (d) each gets full voltage
27. 27.🔋 Does a mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
28. 28.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are ON (d) when both are OFF
29. 29.💡 5 identical bulbs are joined in series with a 15 V battery (ideal wires). How many volts does each bulb get? =
30. 30.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
31. 31.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
32. 32.🔋 6 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
33. 33.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
34. 34.Which of these means the circuit is closed? (a) a wire has come loose (b) all wires are joined (c) a wire is cut (d) a cell is taken out
35. 35.True or false: to build with an adult near is safe. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a copper wire (b) an iron nail (c) a metal paper clip (d) a cotton thread
37. 37.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. How many bulbs glow?
38. 38.True or false: a rubber eraser is a conductor. (a) True (b) False
39. 39.💡 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) dimmer (c) brighter
40. 40.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) a parallel circuit (c) an open circuit (d) a short circuit

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids