Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 888 · 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.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a circle with V inside (c) two equal parallel lines (d) one tall, one short bar
2. 2.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) battery (b) voltmeter (c) bulb (d) cell
3. 3.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
4. 4.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a copper wire (c) a ceramic cup (d) a plastic straw
6. 6.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
7. 7.🔍 Which is the odd one out? (a) a street light (b) a mixer grinder (c) an electric toy car (d) an exhaust fan
8. 8.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
9. 9.True or false: a table fan mainly makes sound. (a) True (b) False
10. 10.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
11. 11.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) little stars (d) dotted circles
12. 12.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
13. 13.Which of these is safe? (a) build with an adult near (b) touch a switch when wet (c) use mains for a project (d) open a phone charger
14. 14.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the shorter line (d) the longer line
15. 15.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
16. 16.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
17. 17.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
18. 18.🔍 Which is the odd one out? (a) poke things in a socket (b) keep drinks far away (c) throw cells in a fire (d) touch a fallen wire
19. 19.Which of these uses electricity? (a) an air conditioner (b) a bicycle dynamo (c) a battery (d) a solar panel
20. 20.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) by Wi-Fi (d) not joined
21. 21.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) quick and clear for all (c) to hide the circuit (d) symbols are heavier
22. 22.💡 3 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
23. 23.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) bulb (b) battery (c) capacitor (d) LED
24. 24.Which drawing is the symbol for a wire? (a) a circle with A inside (b) triangle, bar and arrows (c) many long-short pairs (d) a straight line
25. 25.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is ON, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
26. 26.🔍 Which is the odd one out? (a) build with an adult near (b) stay away from pylons (c) dry your hands first (d) use mains for a project
27. 27.True or false: a push button springs back when let go. (a) False (b) True
28. 28.Which drawing is the symbol for a resistor? (a) a circle with V inside (b) two equal parallel lines (c) triangle, bar and arrows (d) a plain rectangle
29. 29.💡 Why is house wiring done in parallel? (a) to save copper only (b) each gets full voltage (c) so all go off together (d) to make bulbs dim
30. 30.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a reed switch (c) a slide switch (d) a tilt switch
31. 31.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is OFF (c) the switch is ON (d) a wire has come loose
32. 32.Which drawing is the symbol for a voltmeter? (a) a circle with M inside (b) a circle with V inside (c) a long and a short line (d) two or more cell symbols
33. 33.True or false: a room heater mainly gives out light. (a) False (b) True
34. 34.Which of these is safe? (a) fly kites in open fields (b) use a cable with cuts (c) poke things in a socket (d) climb an electric pole
35. 35.Which of these is true of a series circuit? (a) used in house wiring (b) a break stops every bulb (c) many paths for current (d) own switch for each bulb
36. 36.🔘 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
37. 37.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) only when both are ON (c) never (d) when either is ON
38. 38.💡 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. Bulbs 4 and 5 are taken out of their holders. How many bulbs glow?
39. 39.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a push button (c) a tilt switch (d) a toggle switch
40. 40.💡 6 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?

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