Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 123 · 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 table fan mainly change electricity into? (a) light (b) heat (c) sound (d) movement
2. 2.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) motor (b) LED (c) junction (d) capacitor
3. 3.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) No (b) Yes
4. 4.💡 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
5. 5.What does a push button do? (a) closes near a magnet (b) stays where you flip it (c) closes when tipped over (d) springs back when let go
6. 6.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) a single current path (d) many paths for current
7. 7.Which drawing is the symbol for an ammeter? (a) a long and a short line (b) a circle with A inside (c) many long-short pairs (d) a plain rectangle
8. 8.True or false: a rubber eraser is an insulator. (a) True (b) False
9. 9.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) little stars (d) wavy lines
10. 10.💡 3 identical bulbs are joined in series with a 4.5 V battery (ideal wires). How many volts does each bulb get? =
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the longer line (d) the shorter line
12. 12.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) one out, the rest glow (d) bulbs share the voltage
13. 13.True or false: a circle with a cross is the symbol for a voltmeter. (a) True (b) False
14. 14.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) pour water on them (c) shout for an adult (d) pull them by the hand
15. 15.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) to make it colourful (d) symbols are heavier
16. 16.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) bulb (c) motor (d) wire
17. 17.🔋 5 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
18. 18.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) photons (c) electrons (d) dust particles
19. 19.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) two or more cells joined (d) one single wire
20. 20.Which of these is safe? (a) use mains for a project (b) dry your hands first (c) touch a fallen wire (d) climb an electric pole
21. 21.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) used in house wiring (d) a single current path
22. 22.🔘 When a switch is ON, the circuit is … (a) closed (b) cut (c) broken (d) open
23. 23.⚡ What does a loudspeaker mainly change electricity into? (a) light (b) heat (c) movement (d) sound
24. 24.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the bare end (c) the plastic handle (d) the metal tip
25. 25.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
26. 26.True or false: if a cell is taken out, the circuit is closed and current flows. (a) True (b) False
27. 27.🔋 A 3 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
28. 28.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
29. 29.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
30. 30.🔌 Most metals are good … (a) batteries (b) conductors (c) insulators (d) magnets only
31. 31.Which of these gives us electricity? (a) a television (b) a refrigerator (c) a water pump (d) a generator
32. 32.True or false: a plain rectangle is the symbol for a motor. (a) False (b) True
33. 33.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
34. 34.Which of these mainly gives out heat? (a) a water heater (b) a school bell (c) an electric toy car (d) a doorbell
35. 35.Which of these is an insulator? (a) an iron nail (b) a steel coin (c) a woollen thread (d) a steel spoon
36. 36.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
37. 37.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a fuse or MCB (b) a bulb (c) a plug top (d) a long wire
38. 38.⚠️ Is it safe to climb an electric pole? (a) safe (b) not safe
39. 39.⚡ What does a toaster mainly change electricity into? (a) light (b) heat (c) movement (d) sound
40. 40.⚡ What does an electric drill mainly change electricity into? (a) sound (b) movement (c) heat (d) light

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