Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 479 · 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.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) closed (d) broken
2. 2.🔍 Which is the odd one out? (a) build with an adult near (b) fly kites in open fields (c) use small battery cells (d) climb an electric pole
3. 3.🔍 Which is the odd one out? (a) a tube light (b) a room heater (c) a torch (d) a traffic signal
4. 4.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
5. 5.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it is just untidy (c) water carries current (d) it spoils the paint
6. 6.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
7. 7.🔋 Does a television give electricity or use electricity? (a) uses electricity (b) gives electricity
8. 8.🔍 Which is the odd one out? (a) take cells out after use (b) touch a switch when wet (c) use mains for a project (d) climb an electric pole
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a paper strip (d) a copper wire
10. 10.Which of these mainly gives out light? (a) a toaster (b) a night lamp (c) a buzzer (d) a table fan
11. 11.True or false: to touch a switch when wet is not safe. (a) True (b) False
12. 12.🔦 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 cotton thread. Does the bulb glow? (a) Yes (b) No
13. 13.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the glass (b) the switch (c) the filament (d) the base
14. 14.Which of these is safe? (a) throw cells in a fire (b) dry your hands first (c) climb an electric pole (d) use a cable with cuts
15. 15.True or false: if a wire has come loose, the circuit is open and no current flows. (a) False (b) True
16. 16.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
17. 17.💡 4 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
18. 18.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) two or more cells joined (d) a kind of bulb
19. 19.Which of these gives us electricity? (a) a bicycle dynamo (b) a washing machine (c) a computer (d) a mobile phone
20. 20.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
21. 21.True or false: a wooden stick is a conductor. (a) True (b) False
22. 22.Which of these is a conductor? (a) a wooden stick (b) a plastic ruler (c) a dry cork (d) a safety pin
23. 23.🔌 Which metal is used for most electric wires at home? (a) glass (b) rubber (c) copper (d) plastic
24. 24.💡 3 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
25. 25.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) cell (b) bulb (c) voltmeter (d) ammeter
26. 26.🔋 4 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
27. 27.🔘 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 OFF. Does the bulb glow? (a) No (b) Yes
28. 28.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they all go out (d) they keep glowing
29. 29.🔍 Which is the odd one out? (a) fly a kite near wires (b) build with an adult near (c) use small battery cells (d) fly kites in open fields
30. 30.Which of these is safe? (a) touch a fallen wire (b) use a cable with cuts (c) keep drinks far away (d) throw cells in a fire
31. 31.True or false: a toggle switch stays where you flip it. (a) True (b) False
32. 32.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a reed switch (c) a push button (d) a slide switch
33. 33.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
34. 34.True or false: a line lifted at a gap is the symbol for a cell. (a) True (b) False
35. 35.True or false: a table fan mainly makes movement. (a) True (b) False
36. 36.True or false: a ceramic cup is an insulator. (a) False (b) True
37. 37.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
38. 38.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) the loop is complete (d) a wire has come loose
39. 39.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a reed switch (c) a slide switch (d) a toggle switch
40. 40.Which drawing is the symbol for a bulb? (a) a plain rectangle (b) triangle against a bar (c) a small empty box (d) a circle with an X in it

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids