Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 965 · 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 tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) No (b) Yes
2. 2.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
3. 3.Which of these is safe? (a) climb an electric pole (b) poke things in a socket (c) use small battery cells (d) use a cable with cuts
4. 4.🔍 Which is the odd one out? (a) fly kites in open fields (b) use small battery cells (c) stop if a part gets hot (d) throw cells in a fire
5. 5.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a slide switch (c) a toggle switch (d) a tilt switch
6. 6.🔦 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 rubber band. Does the bulb glow? (a) No (b) Yes
7. 7.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
8. 8.Which of these uses electricity? (a) a cell (b) a battery (c) a power station (d) an air conditioner
9. 9.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is an insulator (c) plastic is a conductor (d) to make them heavy
10. 10.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
11. 11.🔘 What does a switch do in a circuit? (a) stores current (b) makes electricity (c) opens or closes the loop (d) changes the voltage
12. 12.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
13. 13.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) nobody (c) a trusted adult (d) a younger child
14. 14.Which of these means the circuit is open? (a) the loop is complete (b) all wires are joined (c) the switch is ON (d) the bulb is unscrewed
15. 15.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) capacitor (b) cell (c) switch (d) junction
16. 16.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
17. 17.True or false: if all wires are joined, the circuit is closed and current flows. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a graphite rod (b) an iron nail (c) a glass marble (d) a metal paper clip
19. 19.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a push button (c) a toggle switch (d) a reed switch
20. 20.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a switch that is ON (c) an insulator (d) a cell
21. 21.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) the loop is complete (c) the switch is OFF (d) a wire has come loose
22. 22.True or false: a slide switch slides side to side. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a room heater (b) a night lamp (c) an electric kettle (d) a rice cooker
24. 24.What does a toggle switch do? (a) springs back when let go (b) flips up or down (c) closes when tipped over (d) works only while pressed
25. 25.🔁 Is the circuit closed or open if a cell is taken out? (a) open (b) closed
26. 26.⚡ What does a tube light mainly change electricity into? (a) heat (b) movement (c) sound (d) light
27. 27.Which of these is a conductor? (a) a ceramic cup (b) a paper strip (c) a steel spoon (d) a glass marble
28. 28.True or false: if all wires are joined, the circuit is open and no current flows. (a) True (b) False
29. 29.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) one out, the rest glow (d) bulbs share the voltage
30. 30.True or false: a buzzer mainly gives out light. (a) False (b) True
31. 31.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
32. 32.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
33. 33.True or false: a cotton thread is a conductor. (a) True (b) False
34. 34.True or false: “a single current path” is true of a series circuit. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) stay away from pylons (b) keep drinks far away (c) dry your hands first (d) open a phone charger
36. 36.Which of these means the circuit is closed? (a) a wire has come loose (b) the switch is OFF (c) a cell is taken out (d) all wires are joined
37. 37.Which of these gives us electricity? (a) a computer (b) a mobile phone (c) a washing machine (d) a solar panel
38. 38.🔋 Does a water pump give electricity or use electricity? (a) uses electricity (b) gives electricity
39. 39.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) motor (c) resistor (d) cell
40. 40.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes

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