Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 674 · 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 is the odd one out? (a) keep drinks far away (b) take cells out after use (c) build with an adult near (d) touch a switch when wet
2. 2.Which of these means the circuit is closed? (a) a cell is taken out (b) a wire has come loose (c) the loop is complete (d) the bulb is unscrewed
3. 3.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.🔦 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 wooden stick. Does the bulb glow? (a) No (b) Yes
5. 5.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) chemical energy (c) movement energy (d) light energy
6. 6.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
7. 7.Which of these is true of a series circuit? (a) a single current path (b) each gets the full volts (c) one out, the rest glow (d) used in house wiring
8. 8.🔘 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 ON and C is ON. Does the bulb glow? (a) Yes (b) No
9. 9.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
10. 10.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) shout for an adult (c) pull them by the hand (d) pour water on them
11. 11.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
12. 12.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) LED (c) cell (d) battery
13. 13.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
14. 14.What does a toggle switch do? (a) springs back when let go (b) flips up or down (c) closes near a magnet (d) works only while pressed
15. 15.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) to hide the circuit (c) quick and clear for all (d) symbols are heavier
16. 16.🔦 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
17. 17.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
18. 18.True or false: a mixer grinder mainly makes movement. (a) False (b) True
19. 19.True or false: if the bulb is unscrewed, the circuit is closed and current flows. (a) False (b) True
20. 20.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) Yes (b) No
21. 21.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
22. 22.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
23. 23.True or false: a small empty box is the symbol for a battery. (a) False (b) True
24. 24.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) No (b) Yes
26. 26.True or false: if the loop is complete, the circuit is open and no current flows. (a) True (b) False
27. 27.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
28. 28.True or false: to take cells out after use is not safe. (a) False (b) True
29. 29.⚡ What does a loudspeaker mainly change electricity into? (a) sound (b) movement (c) heat (d) light
30. 30.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
31. 31.🔍 Which is the odd one out? (a) an electric kettle (b) a room heater (c) a buzzer (d) an electric iron
32. 32.True or false: a tilt switch closes when tipped over. (a) True (b) False
33. 33.Which of these mainly makes movement? (a) a street light (b) a loudspeaker (c) an exhaust fan (d) a traffic signal
34. 34.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) battery (b) ammeter (c) resistor (d) diode
35. 35.Which of these is safe? (a) keep drinks far away (b) throw cells in a fire (c) open a phone charger (d) climb an electric pole
36. 36.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
37. 37.🔍 Which is the odd one out? (a) a siren (b) a school bell (c) an LED lamp (d) a loudspeaker
38. 38.Which of these gives us electricity? (a) a power station (b) a television (c) a mobile phone (d) a washing machine
39. 39.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
40. 40.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) straight lines (d) dotted circles

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