Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 443 · 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 kind of switch stays where you flip it? (a) a reed switch (b) a tilt switch (c) a toggle switch (d) a slide switch
2. 2.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) No (b) Yes
3. 3.Which of these is a conductor? (a) a woollen thread (b) a paper strip (c) a rubber band (d) a steel spoon
4. 4.🔍 Which is the odd one out? (a) an LED lamp (b) a tube light (c) a night lamp (d) a ceiling fan
5. 5.🔍 Which is the odd one out? (a) take cells out after use (b) build with an adult near (c) fly kites in open fields (d) poke things in a socket
6. 6.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a push button (c) a reed switch (d) a tilt switch
7. 7.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) the shorter line (d) both lines
8. 8.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
9. 9.⚡ What does a toaster mainly change electricity into? (a) sound (b) light (c) movement (d) heat
10. 10.🔍 Which is the odd one out? (a) an electric toy car (b) a ceiling fan (c) a room heater (d) a table fan
11. 11.Which of these uses electricity? (a) a solar panel (b) a power station (c) a wind turbine (d) a refrigerator
12. 12.True or false: a reed switch closes near a magnet. (a) True (b) False
13. 13.🔋 2 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
14. 14.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
15. 15.True or false: a water heater mainly makes sound. (a) True (b) False
16. 16.True or false: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
17. 17.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
18. 18.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
19. 19.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
20. 20.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) the loop is complete (d) the bulb is unscrewed
21. 21.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
22. 22.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
23. 23.🔘 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 ON and D is ON. Does the bulb glow? (a) Yes (b) No
24. 24.True or false: a loudspeaker mainly gives out heat. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) stay away from pylons (b) use a cable with cuts (c) touch a fallen wire (d) fly a kite near wires
26. 26.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a ceramic cup. Does the bulb glow? (a) No (b) Yes
27. 27.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) one (c) none (d) two
28. 28.🔘 What does a switch do in a circuit? (a) stores current (b) opens or closes the loop (c) makes electricity (d) changes the voltage
29. 29.Which drawing is the symbol for an ammeter? (a) a circle with V inside (b) a circle with A inside (c) a straight line (d) triangle, bar and arrows
30. 30.🔋 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
31. 31.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) switch (b) motor (c) wire (d) cell
32. 32.True or false: a circle with A inside is the symbol for a battery. (a) True (b) False
33. 33.🔋 Does a mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
34. 34.🔍 Which is the odd one out? (a) a copper wire (b) a cotton thread (c) a ceramic cup (d) a woollen thread
35. 35.Which of these is a conductor? (a) a wooden stick (b) a rubber band (c) a ceramic cup (d) a metal paper clip
36. 36.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) a break stops every bulb (d) one out, the rest glow
37. 37.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) one bulb out, all go out (d) own switch for each bulb
38. 38.🔁 What must there be for a current to flow? (a) one loose end (b) a complete loop (c) a broken path (d) a plastic gap
39. 39.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
40. 40.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the steel shaft (d) the plastic handle

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