Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 287 · 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.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
2. 2.True or false: to stay away from pylons is not safe. (a) False (b) True
3. 3.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
4. 4.True or false: a mixer grinder mainly makes movement. (a) True (b) False
5. 5.True or false: a tilt switch closes when tipped over. (a) True (b) False
6. 6.Which of these gives us electricity? (a) a bicycle dynamo (b) a television (c) a computer (d) an air conditioner
7. 7.True or false: to use small battery cells is safe. (a) False (b) True
8. 8.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) glass (d) copper
9. 9.⚠️ Is it safe to stay away from pylons? (a) not safe (b) safe
10. 10.🔘 Which kind of switch closes near a magnet? (a) a reed switch (b) a slide switch (c) a push button (d) a tilt switch
11. 11.🔍 Which is the odd one out? (a) a safety pin (b) a cotton thread (c) a ceramic cup (d) a wooden stick
12. 12.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
13. 13.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
14. 14.🔍 Which is the odd one out? (a) a ceiling fan (b) an electric drill (c) a mixer grinder (d) a tube light
15. 15.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
16. 16.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) half the voltage (c) the same voltage (d) no voltage
17. 17.True or false: a paper strip is an insulator. (a) True (b) False
18. 18.⚡ What does a night lamp mainly change electricity into? (a) sound (b) heat (c) movement (d) light
19. 19.Which of these gives us electricity? (a) a washing machine (b) an air conditioner (c) a refrigerator (d) a battery
20. 20.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) straight lines (d) wavy lines
21. 21.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) own switch for each bulb (d) one bulb out, all go out
22. 22.🔍 Which is the odd one out? (a) use mains for a project (b) touch a switch when wet (c) climb an electric pole (d) keep drinks far away
23. 23.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
24. 24.⚡ A solar panel changes which kind of energy into electricity? (a) light energy (b) sound energy (c) wind energy (d) chemical energy
25. 25.True or false: one tall, one short bar is the symbol for a switch. (a) True (b) False
26. 26.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
27. 27.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 230 V (c) 1.5 V (d) 15 V
28. 28.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
29. 29.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
30. 30.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) the bulb is unscrewed (d) the loop is complete
31. 31.🔍 Which is the odd one out? (a) a steel coin (b) an iron nail (c) a steel spoon (d) a cotton thread
32. 32.🔘 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) Yes (b) No
33. 33.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
34. 34.Which of these is safe? (a) stay away from pylons (b) touch a switch when wet (c) poke things in a socket (d) fly a kite near wires
35. 35.What does a reed switch do? (a) closes when tipped over (b) springs back when let go (c) closes near a magnet (d) works only while pressed
36. 36.True or false: a toaster mainly gives out heat. (a) False (b) True
37. 37.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) cell (b) resistor (c) bulb (d) junction
38. 38.True or false: a reed switch slides side to side. (a) True (b) False
39. 39.💡 5 identical bulbs are joined in series with a 7.5 V battery (ideal wires). How many volts does each bulb get? =
40. 40.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe

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