Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 625 · 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.🔘 When a switch is ON, the circuit is … (a) broken (b) open (c) closed (d) cut
2. 2.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
3. 3.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) only one (b) it does not matter (c) none (d) both of them
4. 4.True or false: a reed switch stays where you flip it. (a) False (b) True
5. 5.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) none (d) one for each bulb
6. 6.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) friction (c) sound (d) electric current
7. 7.⚡ What does a ceiling fan mainly change electricity into? (a) sound (b) light (c) heat (d) movement
8. 8.Which drawing is the symbol for a motor? (a) a circle with M inside (b) a long and a short line (c) a straight line (d) a circle with V inside
9. 9.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) light energy (c) chemical energy (d) movement energy
10. 10.Which of these is an insulator? (a) a cotton thread (b) a steel spoon (c) a graphite rod (d) a metal paper clip
11. 11.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) when both are OFF (c) when both are ON (d) never
12. 12.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) electrical energy (c) wind energy (d) sound energy
13. 13.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) junction (c) bulb (d) wire
14. 14.What does a toggle switch do? (a) closes when tipped over (b) stays where you flip it (c) closes near a magnet (d) works only while pressed
15. 15.True or false: a reed switch closes when tipped over. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) take cells out after use (b) climb an electric pole (c) use a cable with cuts (d) throw cells in a fire
17. 17.Which of these is a conductor? (a) a paper strip (b) a steel spoon (c) a wooden stick (d) a glass marble
18. 18.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the steel shaft (c) the plastic handle (d) the bare end
19. 19.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
20. 20.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a brass key. Does the bulb glow? (a) No (b) Yes
21. 21.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
22. 22.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
23. 23.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
24. 24.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
25. 25.Which drawing is the symbol for a switch? (a) many long-short pairs (b) a straight line (c) a line lifted at a gap (d) a circle with a cross
26. 26.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
27. 27.🔍 Which is the odd one out? (a) a traffic signal (b) a mixer grinder (c) an electric drill (d) a table fan
28. 28.True or false: a reed switch springs back when let go. (a) True (b) False
29. 29.True or false: to throw cells in a fire is safe. (a) False (b) True
30. 30.🔋 Does a water pump give electricity or use electricity? (a) uses electricity (b) gives electricity
31. 31.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
32. 32.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) water carries current (c) it spoils the paint (d) it is just untidy
33. 33.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
34. 34.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) False (b) True
35. 35.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a cell (c) a switch that is ON (d) an insulator
36. 36.True or false: to keep drinks far away is not safe. (a) False (b) True
37. 37.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
38. 38.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) Yes (b) No
39. 39.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) by Wi-Fi (d) in series
40. 40.Which of these gives us electricity? (a) a water pump (b) a wind turbine (c) a television (d) a mobile phone

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