Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 408 · 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.🔘 What does a switch do in a circuit? (a) changes the voltage (b) makes electricity (c) opens or closes the loop (d) stores current
2. 2.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is OFF and D is ON. Does the bulb glow? (a) No (b) Yes
3. 3.Which drawing is the symbol for a wire? (a) many long-short pairs (b) a straight line (c) two equal parallel lines (d) a circle with V inside
4. 4.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) an inverter socket (c) a wall socket (d) a small battery pack
5. 5.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
6. 6.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
7. 7.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
8. 8.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
9. 9.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
10. 10.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) chemical energy (c) light energy (d) movement energy
11. 11.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) poke things in a socket (b) fly a kite near wires (c) build with an adult near (d) throw cells in a fire
13. 13.True or false: to use small battery cells is not safe. (a) True (b) False
14. 14.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
15. 15.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
16. 16.⚡ What does an LED lamp mainly change electricity into? (a) light (b) movement (c) heat (d) sound
17. 17.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a cell (c) a conductor (d) a switch that is ON
18. 18.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
19. 19.⚡ What does an electric toy car mainly change electricity into? (a) sound (b) movement (c) heat (d) light
20. 20.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) when either is ON (b) only when both are ON (c) only when both are OFF (d) never
21. 21.🔍 Which is the odd one out? (a) dry your hands first (b) stay away from pylons (c) climb an electric pole (d) fly kites in open fields
22. 22.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
23. 23.🔁 What must there be for a current to flow? (a) a plastic gap (b) one loose end (c) a complete loop (d) a broken path
24. 24.Which of these gives us electricity? (a) a television (b) a solar panel (c) a computer (d) a water pump
25. 25.Which drawing is the symbol for a motor? (a) a long and a short line (b) two equal parallel lines (c) a circle with M inside (d) a straight line
26. 26.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
27. 27.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they get dimmer (d) they all go out
28. 28.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
29. 29.True or false: if the switch is ON, the circuit is closed and current flows. (a) True (b) False
30. 30.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 6 is taken out of its holder. How many bulbs glow?
31. 31.Which of these means the circuit is closed? (a) the switch is OFF (b) a cell is taken out (c) the loop is complete (d) a wire has come loose
32. 32.💡 5 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
33. 33.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) so all go off together (d) to save copper only
34. 34.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) shout for an adult (c) wait and watch (d) pour water on them
35. 35.True or false: a slide switch slides side to side. (a) False (b) True
36. 36.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) wire (c) capacitor (d) bulb
37. 37.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 1.5 V (d) 230 V
38. 38.⚡ What does an electric iron mainly change electricity into? (a) light (b) sound (c) heat (d) movement
39. 39.True or false: triangle, bar and arrows is the symbol for a junction. (a) True (b) False
40. 40.Which drawing is the symbol for a battery? (a) a circle with V inside (b) two or more cell symbols (c) triangle against a bar (d) a circle with a cross

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