Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 439 · 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 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 cotton thread. Does the bulb glow? (a) Yes (b) No
2. 2.Which of these is a conductor? (a) a glass marble (b) a paper strip (c) a copper wire (d) a dry cork
3. 3.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) photons (c) dust particles (d) electrons
4. 4.True or false: an electric kettle mainly gives out heat. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) an electric toy car (b) a buzzer (c) a siren (d) a doorbell
6. 6.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
7. 7.Which of these gives us electricity? (a) a refrigerator (b) a water pump (c) a solar panel (d) a computer
8. 8.⚠️ Is it safe to use mains for a project? (a) not safe (b) safe
9. 9.🔍 Which is the odd one out? (a) poke things in a socket (b) fly a kite near wires (c) use a cable with cuts (d) build with an adult near
10. 10.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
11. 11.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the glass (b) the base (c) the switch (d) the filament
12. 12.🔋 5 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)? =
13. 13.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
14. 14.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
15. 15.🔘 When a switch is ON, the circuit is … (a) cut (b) closed (c) broken (d) open
16. 16.True or false: if a wire is cut, the circuit is open and no current flows. (a) False (b) True
17. 17.⚡ What does a toaster mainly change electricity into? (a) light (b) heat (c) movement (d) sound
18. 18.True or false: a siren mainly makes movement. (a) True (b) False
19. 19.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
20. 20.Which of these gives us electricity? (a) a television (b) a battery (c) a refrigerator (d) a water pump
21. 21.⚡ What does a loudspeaker mainly change electricity into? (a) movement (b) light (c) heat (d) sound
22. 22.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) switch (c) cell (d) diode
23. 23.💡 In a series circuit, how many paths does the current have? (a) none (b) one (c) one for each bulb (d) two
24. 24.⚡ A cell changes stored chemical energy into which kind of energy? (a) electrical energy (b) wind energy (c) sound energy (d) nuclear energy
25. 25.True or false: an electric drill mainly gives out heat. (a) True (b) False
26. 26.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a stranger online (c) nobody (d) a trusted adult
27. 27.🔘 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 ON, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
28. 28.✏️ In a circuit diagram, which part is drawn as a straight line? (a) battery (b) ammeter (c) junction (d) wire
29. 29.🔘 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) Yes (b) No
30. 30.🔍 Which is the odd one out? (a) a room heater (b) a buzzer (c) a siren (d) a school bell
31. 31.💡 4 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
32. 32.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a reed switch (c) a slide switch (d) a toggle switch
33. 33.⚡ What does a siren mainly change electricity into? (a) light (b) movement (c) sound (d) heat
34. 34.True or false: to build with an adult near is not safe. (a) True (b) False
35. 35.Which of these is true of a series circuit? (a) used in house wiring (b) a break stops every bulb (c) one out, the rest glow (d) each gets the full volts
36. 36.🔘 Which kind of switch flips up or down? (a) a push button (b) a toggle switch (c) a reed switch (d) a tilt switch
37. 37.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the longer line (d) the shorter line
38. 38.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
39. 39.🔍 Which is the odd one out? (a) climb an electric pole (b) poke things in a socket (c) keep drinks far away (d) throw cells in a fire
40. 40.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 230 V (c) 9 V (d) 12 V

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