Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 273 · 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) opens or closes the loop (c) stores current (d) makes electricity
2. 2.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
3. 3.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the switch (c) the base (d) the glass
4. 4.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) electrical energy (c) wind energy (d) sound energy
5. 5.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a fuse or MCB (b) a long wire (c) a bulb (d) a plug top
6. 6.💡 In a series circuit, how many paths does the current have? (a) none (b) two (c) one for each bulb (d) one
7. 7.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is an insulator (c) to make them heavy (d) plastic is a conductor
8. 8.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the steel shaft (c) the bare end (d) the plastic handle
9. 9.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
10. 10.🔦 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) No (b) Yes
11. 11.True or false: to use small battery cells is not safe. (a) True (b) False
12. 12.⚠️ Is it safe to fly a kite near wires? (a) not safe (b) safe
13. 13.Which of these is a conductor? (a) a plastic ruler (b) a wooden stick (c) an iron nail (d) a rubber eraser
14. 14.🔍 Which is the odd one out? (a) a siren (b) a loudspeaker (c) a school bell (d) an electric toy car
15. 15.🔍 Which is the odd one out? (a) a school bell (b) a doorbell (c) a siren (d) a toaster
16. 16.Which of these is not safe? (a) use small battery cells (b) touch a fallen wire (c) keep drinks far away (d) stay away from pylons
17. 17.Which of these mainly makes sound? (a) a loudspeaker (b) an electric drill (c) an electric iron (d) a water heater
18. 18.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
19. 19.True or false: to use a cable with cuts is not safe. (a) False (b) True
20. 20.💡 3 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?
21. 21.🔌 Most metals are good … (a) batteries (b) magnets only (c) insulators (d) conductors
22. 22.Which drawing is the symbol for a capacitor? (a) two or more cell symbols (b) a circle with V inside (c) a long and a short line (d) two equal parallel lines
23. 23.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) a dot where wires meet (c) two equal parallel lines (d) a line lifted at a gap
24. 24.⚡ A solar panel changes which kind of energy into electricity? (a) wind energy (b) chemical energy (c) light energy (d) sound energy
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a woollen thread (d) a safety pin
26. 26.What does a toggle switch do? (a) stays where you flip it (b) springs back when let go (c) closes when tipped over (d) works only while pressed
27. 27.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) closed (d) broken
28. 28.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) cut them open (d) bury them in soil
29. 29.True or false: an electric kettle mainly gives out light. (a) True (b) False
30. 30.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is ON. Does the bulb glow? (a) No (b) Yes
31. 31.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a line lifted at a gap (c) a straight line (d) two or more cell symbols
32. 32.True or false: triangle, bar and arrows is the symbol for a voltmeter. (a) False (b) True
33. 33.Which drawing is the symbol for a voltmeter? (a) a line lifted at a gap (b) two equal parallel lines (c) a circle with V inside (d) a small empty box
34. 34.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
35. 35.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
36. 36.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
37. 37.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
38. 38.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
39. 39.Which drawing is the symbol for a cell? (a) a circle with M inside (b) a circle with V inside (c) one tall, one short bar (d) many long-short pairs
40. 40.True or false: “a single current path” is true of a series circuit. (a) True (b) False

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