Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 428 · 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.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
2. 2.Which of these gives us electricity? (a) an air conditioner (b) a power station (c) a mobile phone (d) a computer
3. 3.🔁 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
4. 4.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) junction (b) cell (c) wire (d) switch
5. 5.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
6. 6.🔋 7 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)? =
7. 7.🔍 Which is the odd one out? (a) touch a fallen wire (b) poke things in a socket (c) build with an adult near (d) open a phone charger
8. 8.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
9. 9.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
10. 10.Which of these mainly makes movement? (a) a siren (b) a night lamp (c) an electric drill (d) a rice cooker
11. 11.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
12. 12.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
13. 13.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
14. 14.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
15. 15.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
16. 16.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
17. 17.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
18. 18.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 1 glow? (a) No (b) Yes
19. 19.🔋 A 12 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
20. 20.⚠️ Which power source should children use for electronics projects? (a) an inverter socket (b) a wall socket (c) a mains extension board (d) a small battery pack
21. 21.True or false: a torch mainly gives out light. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a ceramic cup (b) a plastic straw (c) a dry cork (d) an iron nail
23. 23.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
24. 24.True or false: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
25. 25.⚡ What do we call a flow of electric charge through a wire? (a) sound (b) a magnet (c) electric current (d) friction
26. 26.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
27. 27.True or false: a line lifted at a gap is the symbol for a voltmeter. (a) True (b) False
28. 28.🔘 Which kind of switch closes near a magnet? (a) a slide switch (b) a toggle switch (c) a push button (d) a reed switch
29. 29.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) no voltage (c) a smaller voltage (d) a bigger voltage
30. 30.🔦 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 rubber band. Does the bulb glow? (a) Yes (b) No
31. 31.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
32. 32.Which of these uses electricity? (a) a battery (b) a bicycle dynamo (c) a power station (d) a television
33. 33.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
34. 34.Which drawing is the symbol for a resistor? (a) a straight line (b) two or more cell symbols (c) a plain rectangle (d) a line lifted at a gap
35. 35.Which of these means the circuit is closed? (a) the switch is ON (b) the switch is OFF (c) a cell is taken out (d) the bulb is unscrewed
36. 36.True or false: “a single current path” is true of a series circuit. (a) False (b) True
37. 37.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) little stars (d) straight lines
38. 38.Which of these uses electricity? (a) a solar panel (b) a wind turbine (c) a refrigerator (d) a generator
39. 39.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) to make it colourful (d) symbols are heavier
40. 40.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)

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