Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 938 · 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.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they keep glowing (d) they get dimmer
2. 2.What does a reed switch do? (a) closes near a magnet (b) flips up or down (c) works only while pressed (d) closes when tipped over
3. 3.What does a toggle switch do? (a) slides side to side (b) closes when tipped over (c) stays where you flip it (d) closes near a magnet
4. 4.True or false: a tube light mainly gives out light. (a) False (b) True
5. 5.True or false: a woollen thread is an insulator. (a) False (b) True
6. 6.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
7. 7.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a bigger voltage (c) the same voltage (d) a smaller voltage
8. 8.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) many paths for current (d) bulbs share the voltage
9. 9.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
10. 10.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
11. 11.🔍 Which is the odd one out? (a) use a cable with cuts (b) fly a kite near wires (c) touch a fallen wire (d) take cells out after use
12. 12.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
13. 13.True or false: a push button works only while pressed. (a) False (b) True
14. 14.Which of these is an insulator? (a) a copper wire (b) a glass marble (c) a steel coin (d) a safety pin
15. 15.True or false: a glass marble is a conductor. (a) True (b) False
16. 16.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
17. 17.🔋 How many 3 V cells must be joined in series to give 15 V?
18. 18.🔍 Which is the odd one out? (a) a doorbell (b) a traffic signal (c) a siren (d) a school bell
19. 19.⚠️ Is it safe to use mains for a project? (a) safe (b) not safe
20. 20.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
21. 21.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) sound (c) a magnet (d) electric current
22. 22.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
23. 23.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
24. 24.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 6 glow? (a) Yes (b) No
25. 25.Which of these is safe? (a) build with an adult near (b) touch a switch when wet (c) open a phone charger (d) fly a kite near wires
26. 26.🔋 Does a water pump give electricity or use electricity? (a) uses electricity (b) gives electricity
27. 27.🔁 What must there be for a current to flow? (a) a complete loop (b) a plastic gap (c) one loose end (d) a broken path
28. 28.✏️ In a circuit diagram, which part is drawn as a straight line? (a) LED (b) junction (c) wire (d) ammeter
29. 29.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
30. 30.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a reed switch (c) a push button (d) a tilt switch
31. 31.Which of these mainly makes movement? (a) an LED lamp (b) a mixer grinder (c) a toaster (d) a traffic signal
32. 32.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
33. 33.True or false: a toggle switch springs back when let go. (a) True (b) False
34. 34.Which of these mainly gives out heat? (a) an electric drill (b) a traffic signal (c) a torch (d) a toaster
35. 35.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) copper (d) glass
36. 36.True or false: an LED lamp mainly makes movement. (a) False (b) True
37. 37.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is ON. Does the bulb glow? (a) No (b) Yes
38. 38.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
39. 39.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
40. 40.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series

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