Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 923 · 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 of these means the circuit is closed? (a) a wire is cut (b) all wires are joined (c) a cell is taken out (d) a wire has come loose
2. 2.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) battery (b) diode (c) LED (d) resistor
3. 3.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) diode (b) wire (c) capacitor (d) cell
4. 4.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
5. 5.Which of these is not safe? (a) stay away from pylons (b) stop if a part gets hot (c) touch a fallen wire (d) use small battery cells
6. 6.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when both are OFF (c) when either is ON (d) when both are ON
7. 7.Which of these is a conductor? (a) a rubber eraser (b) a ceramic cup (c) a steel coin (d) a cotton thread
8. 8.🔍 Which is the odd one out? (a) a tube light (b) a doorbell (c) a torch (d) a street light
9. 9.True or false: a woollen thread is a conductor. (a) True (b) False
10. 10.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
11. 11.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) an iron nail (b) a plastic straw (c) a plastic ruler (d) a cotton thread
13. 13.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
14. 14.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by aluminium foil. Does the bulb glow? (a) Yes (b) No
15. 15.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) cell (b) resistor (c) switch (d) voltmeter
16. 16.🔘 What does a switch do in a circuit? (a) changes the voltage (b) opens or closes the loop (c) makes electricity (d) stores current
17. 17.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
18. 18.Which of these mainly gives out light? (a) a tube light (b) a water heater (c) a room heater (d) an electric kettle
19. 19.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) No (b) Yes
20. 20.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
21. 21.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
22. 22.🔍 Which is the odd one out? (a) stay away from pylons (b) fly a kite near wires (c) keep drinks far away (d) fly kites in open fields
23. 23.True or false: a paper strip is a conductor. (a) False (b) True
24. 24.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
25. 25.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
26. 26.Which of these is not safe? (a) keep drinks far away (b) stop if a part gets hot (c) poke things in a socket (d) stay away from pylons
27. 27.Which of these is not safe? (a) fly kites in open fields (b) build with an adult near (c) use a cable with cuts (d) stop if a part gets hot
28. 28.⚡ What does a ceiling fan mainly change electricity into? (a) heat (b) movement (c) light (d) sound
29. 29.🔍 Which is the odd one out? (a) throw cells in a fire (b) dry your hands first (c) use small battery cells (d) stay away from pylons
30. 30.🔍 Which is the odd one out? (a) a steel coin (b) aluminium foil (c) a rubber eraser (d) a graphite rod
31. 31.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
32. 32.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
33. 33.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a ceramic cup (d) a glass marble
34. 34.🔘 Which kind of switch closes when tipped over? (a) a reed switch (b) a push button (c) a tilt switch (d) a toggle switch
35. 35.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is ON, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
36. 36.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
37. 37.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a push button (c) a reed switch (d) a tilt switch
38. 38.Which of these mainly makes movement? (a) a siren (b) a mixer grinder (c) a rice cooker (d) a toaster
39. 39.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
40. 40.Which of these mainly makes movement? (a) an LED lamp (b) a street light (c) a table fan (d) a buzzer

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