Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 319 · 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 a conductor? (a) a wooden stick (b) a safety pin (c) a rubber band (d) a paper strip
2. 2.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
3. 3.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
4. 4.Which of these mainly gives out light? (a) a mixer grinder (b) a school bell (c) a tube light (d) a loudspeaker
5. 5.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a tilt switch
6. 6.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a long and a short line (c) a line lifted at a gap (d) two or more cell symbols
7. 7.Which of these mainly gives out light? (a) a buzzer (b) a rice cooker (c) a night lamp (d) an electric toy car
8. 8.What does a tilt switch do? (a) stays where you flip it (b) works only while pressed (c) closes near a magnet (d) closes when tipped over
9. 9.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a plastic gap (d) a complete loop
10. 10.True or false: a glass marble is an insulator. (a) False (b) True
11. 11.True or false: to fly a kite near wires is safe. (a) True (b) False
12. 12.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 1.5 V (d) 0.5 V
13. 13.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) diode (b) capacitor (c) voltmeter (d) bulb
14. 14.What does a reed switch do? (a) stays where you flip it (b) flips up or down (c) slides side to side (d) closes near a magnet
15. 15.🔍 Which is the odd one out? (a) throw cells in a fire (b) touch a fallen wire (c) poke things in a socket (d) stop if a part gets hot
16. 16.💡 3 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 2 and 3 are taken out of their holders. How many bulbs glow?
17. 17.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) each gets the full volts (d) one out, the rest glow
18. 18.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
19. 19.True or false: a doorbell mainly gives out heat. (a) False (b) True
20. 20.⚡ A solar panel changes which kind of energy into electricity? (a) wind energy (b) light energy (c) sound energy (d) chemical energy
21. 21.🔦 A circuit has a used-up (dead) 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 dry cork. Does the bulb glow? (a) No (b) Yes
22. 22.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
23. 23.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
24. 24.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a slide switch (c) a push button (d) a reed switch
25. 25.Which of these is a conductor? (a) a cotton thread (b) aluminium foil (c) a rubber band (d) a ceramic cup
26. 26.⚠️ Is it safe to take cells out after use? (a) safe (b) not safe
27. 27.🔍 Which is the odd one out? (a) stop if a part gets hot (b) use small battery cells (c) take cells out after use (d) climb an electric pole
28. 28.🔋 Does a refrigerator give electricity or use electricity? (a) uses electricity (b) gives electricity
29. 29.⚠️ Is it safe to open a phone charger? (a) not safe (b) safe
30. 30.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a fuse or MCB (c) a long wire (d) a plug top
31. 31.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
32. 32.🔦 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 aluminium foil. Does the bulb glow? (a) No (b) Yes
33. 33.What does a push button do? (a) flips up or down (b) springs back when let go (c) slides side to side (d) closes when tipped over
34. 34.Which of these is safe? (a) use a cable with cuts (b) use small battery cells (c) throw cells in a fire (d) use mains for a project
35. 35.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
36. 36.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
37. 37.⚡ What does a traffic signal mainly change electricity into? (a) sound (b) light (c) heat (d) movement
38. 38.🔋 How many 1.2 V cells must be joined in series to give 7.2 V?
39. 39.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) two or more cells joined (d) a switch with a lid
40. 40.Which of these means the circuit is closed? (a) the switch is OFF (b) all wires are joined (c) a cell is taken out (d) a wire has come loose

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