Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 414 · 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.🔦 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 wooden stick. Does the bulb glow? (a) No (b) Yes
2. 2.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to hide the circuit (c) symbols are heavier (d) to make it colourful
3. 3.True or false: a reed switch flips up or down. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) an electric drill (b) a ceiling fan (c) a table fan (d) a street light
5. 5.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) LED (b) ammeter (c) resistor (d) battery
6. 6.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
7. 7.Which of these mainly gives out light? (a) a water heater (b) a mixer grinder (c) a tube light (d) an electric kettle
8. 8.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
9. 9.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a safety pin (b) a metal paper clip (c) a rubber eraser (d) a graphite rod
11. 11.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
12. 12.🔋 Cells joined + to − in a row (series) give … (a) a bigger voltage (b) a smaller voltage (c) no voltage (d) the same voltage
13. 13.💡 In a series circuit, how many paths does the current have? (a) none (b) one (c) two (d) one for each bulb
14. 14.True or false: a push button springs back when let go. (a) False (b) True
15. 15.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) water drops (c) photons (d) dust particles
16. 16.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
17. 17.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
18. 18.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a toggle switch (c) a slide switch (d) a reed switch
19. 19.🔌 Most metals are good … (a) conductors (b) magnets only (c) insulators (d) batteries
20. 20.🔦 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) No (b) Yes
21. 21.Which of these gives us electricity? (a) a washing machine (b) a computer (c) a bicycle dynamo (d) a refrigerator
22. 22.What does a slide switch do? (a) slides side to side (b) stays where you flip it (c) works only while pressed (d) closes near a magnet
23. 23.🔘 Which kind of switch springs back when let go? (a) a push button (b) a toggle switch (c) a tilt switch (d) a slide switch
24. 24.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
25. 25.🔍 Which is the odd one out? (a) an electric toy car (b) a loudspeaker (c) a ceiling fan (d) a table fan
26. 26.💡 A battery lights 4 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
27. 27.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 1.5 V (c) 230 V (d) 12 V
28. 28.Which of these is safe? (a) poke things in a socket (b) open a phone charger (c) fly kites in open fields (d) use a cable with cuts
29. 29.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
30. 30.Which of these gives us electricity? (a) a mobile phone (b) a generator (c) an air conditioner (d) a washing machine
31. 31.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
32. 32.💡 A battery lights 2 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
33. 33.What does a reed switch do? (a) springs back when let go (b) flips up or down (c) closes near a magnet (d) slides side to side
34. 34.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is OFF. Does the bulb glow? (a) No (b) Yes
35. 35.Which of these gives us electricity? (a) a washing machine (b) a mobile phone (c) a battery (d) a television
36. 36.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) nobody (c) a trusted adult (d) a younger child
37. 37.True or false: a table fan mainly gives out light. (a) True (b) False
38. 38.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 1.5 V (d) 230 V
39. 39.⚡ What do we call a flow of electric charge through a wire? (a) sound (b) a magnet (c) friction (d) electric current
40. 40.🔦 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 paper strip. Does the bulb glow? (a) Yes (b) No

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