Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 361 · 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 is true of a parallel circuit? (a) a single current path (b) own switch for each bulb (c) one bulb out, all go out (d) a break stops every bulb
2. 2.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) bulbs share the voltage (d) each gets the full volts
3. 3.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) capacitor (b) bulb (c) junction (d) switch
4. 4.Which of these mainly gives out heat? (a) an electric toy car (b) an LED lamp (c) a rice cooker (d) a doorbell
5. 5.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
6. 6.Which of these gives us electricity? (a) a wind turbine (b) a water pump (c) a refrigerator (d) a computer
7. 7.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
8. 8.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
9. 9.🔦 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 a metal paper clip. Does the bulb glow? (a) Yes (b) No
10. 10.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) resistor (b) battery (c) switch (d) ammeter
11. 11.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
12. 12.💡 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
13. 13.🔘 What does a switch do in a circuit? (a) opens or closes the loop (b) changes the voltage (c) stores current (d) makes electricity
14. 14.🔘 Which kind of switch slides side to side? (a) a slide switch (b) a push button (c) a toggle switch (d) a tilt switch
15. 15.True or false: to stop if a part gets hot is safe. (a) False (b) True
16. 16.True or false: if the bulb is unscrewed, the circuit is closed and current flows. (a) True (b) False
17. 17.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
18. 18.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a brass key. Does the bulb glow? (a) Yes (b) No
19. 19.🔍 Which is the odd one out? (a) a torch (b) a room heater (c) a street light (d) a traffic signal
20. 20.⚠️ Why must we never touch switches with wet hands? (a) water carries current (b) it spoils the paint (c) it is just untidy (d) water makes it cold
21. 21.🔋 What should you do with used-up cells? (a) give them for recycling (b) cut them open (c) throw them in a fire (d) bury them in soil
22. 22.⚡ What does a table fan mainly change electricity into? (a) heat (b) movement (c) light (d) sound
23. 23.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) used in house wiring (d) one bulb out, all go out
24. 24.Which of these mainly gives out heat? (a) a toaster (b) a night lamp (c) an LED lamp (d) a traffic signal
25. 25.What does a reed switch do? (a) flips up or down (b) closes near a magnet (c) slides side to side (d) stays where you flip it
26. 26.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) nobody (c) a younger child (d) a trusted adult
27. 27.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
28. 28.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
29. 29.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
30. 30.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
31. 31.True or false: aluminium foil is an insulator. (a) False (b) True
32. 32.💡 Why is house wiring done in parallel? (a) so all go off together (b) to make bulbs dim (c) each gets full voltage (d) to save copper only
33. 33.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic straw (c) a brass key (d) a steel coin
35. 35.True or false: a ceramic cup is a conductor. (a) False (b) True
36. 36.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) Yes (b) No
37. 37.🔍 Which is the odd one out? (a) a graphite rod (b) a metal paper clip (c) a steel coin (d) a woollen thread
38. 38.Which of these is true of a series circuit? (a) many paths for current (b) one bulb out, all go out (c) each gets the full volts (d) own switch for each bulb
39. 39.True or false: a circle with V inside is the symbol for a bulb. (a) True (b) False
40. 40.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a complete loop (d) a plastic gap

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