Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 383 · 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 mainly makes sound? (a) a school bell (b) a ceiling fan (c) a toaster (d) an electric drill
2. 2.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the shorter line (d) the longer line
4. 4.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
5. 5.True or false: to fly kites in open fields is not safe. (a) True (b) False
6. 6.Which of these mainly gives out heat? (a) a tube light (b) a room heater (c) a table fan (d) a night lamp
7. 7.Which drawing is the symbol for a wire? (a) a circle with an X in it (b) a plain rectangle (c) a straight line (d) a long and a short line
8. 8.Which of these mainly makes sound? (a) an electric toy car (b) a water heater (c) a rice cooker (d) a doorbell
9. 9.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) switch (b) wire (c) LED (d) bulb
10. 10.🔦 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 brass key. Does the bulb glow? (a) No (b) Yes
11. 11.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) half the voltage (d) the same voltage
12. 12.🔦 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 glass marble. Does the bulb glow? (a) Yes (b) No
13. 13.Which drawing is the symbol for a switch? (a) a circle with A inside (b) a dot where wires meet (c) a line lifted at a gap (d) a circle with M inside
14. 14.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a tilt switch (c) a reed switch (d) a toggle switch
15. 15.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
16. 16.🔍 Which is the odd one out? (a) fly kites in open fields (b) use a cable with cuts (c) dry your hands first (d) take cells out after use
17. 17.True or false: if a cell is taken out, the circuit is closed and current flows. (a) True (b) False
18. 18.Which of these means the circuit is open? (a) all wires are joined (b) a wire has come loose (c) the loop is complete (d) the switch is ON
19. 19.Which of these mainly gives out heat? (a) an exhaust fan (b) a ceiling fan (c) a water heater (d) a buzzer
20. 20.⚡ What does a toaster mainly change electricity into? (a) light (b) movement (c) sound (d) heat
21. 21.True or false: an LED lamp mainly gives out heat. (a) False (b) True
22. 22.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) resistor (b) capacitor (c) cell (d) bulb
23. 23.Which of these is safe? (a) touch a fallen wire (b) touch a switch when wet (c) stay away from pylons (d) fly a kite near wires
24. 24.True or false: a safety pin is an insulator. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) an exhaust fan (b) an electric toy car (c) an electric drill (d) a doorbell
26. 26.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
27. 27.Which of these is a conductor? (a) a cotton thread (b) a dry cork (c) a safety pin (d) a wooden stick
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) wire (b) bulb (c) LED (d) voltmeter
29. 29.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
30. 30.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
31. 31.True or false: a school bell mainly gives out light. (a) False (b) True
32. 32.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) a wire is cut (c) a wire has come loose (d) all wires are joined
33. 33.Which of these is safe? (a) use mains for a project (b) dry your hands first (c) touch a fallen wire (d) use a cable with cuts
34. 34.Which of these uses electricity? (a) a solar panel (b) a power station (c) a water pump (d) a battery
35. 35.True or false: a street light mainly makes movement. (a) True (b) False
36. 36.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) motor (c) diode (d) wire
37. 37.💡 3 identical bulbs are joined in series with a 4.5 V battery (ideal wires). How many volts does each bulb get? =
38. 38.True or false: a tilt switch closes when tipped over. (a) True (b) False
39. 39.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
40. 40.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel

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