Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 313 · 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.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
2. 2.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) ammeter (b) wire (c) diode (d) voltmeter
3. 3.⚡ A fan changes electrical energy mainly into which kind of energy? (a) chemical energy (b) movement energy (c) sound energy (d) light energy
4. 4.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) wind energy (c) light energy (d) sound energy
5. 5.True or false: to take cells out after use is not safe. (a) False (b) True
6. 6.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
7. 7.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic makes current (c) plastic is an insulator (d) to make them heavy
8. 8.True or false: a steel coin is a conductor. (a) True (b) False
9. 9.Which of these is true of a parallel circuit? (a) a single current path (b) used in house wiring (c) one bulb out, all go out (d) bulbs share the voltage
10. 10.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
11. 11.🔍 Which is the odd one out? (a) a wooden stick (b) a glass marble (c) a rubber eraser (d) a copper wire
12. 12.🔍 Which is the odd one out? (a) stay away from pylons (b) climb an electric pole (c) dry your hands first (d) stop if a part gets hot
13. 13.🔋 What should you do with used-up cells? (a) give them for recycling (b) cut them open (c) bury them in soil (d) throw them in a fire
14. 14.🔘 Which kind of switch works only while pressed? (a) a slide switch (b) a tilt switch (c) a toggle switch (d) a push button
15. 15.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
16. 16.⚡ A cell changes stored chemical energy into which kind of energy? (a) electrical energy (b) wind energy (c) sound energy (d) nuclear energy
17. 17.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) one loose end (d) a plastic gap
18. 18.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 9 V (c) 12 V (d) 230 V
19. 19.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
20. 20.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
21. 21.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
22. 22.True or false: “a single current path” is true of a series circuit. (a) True (b) False
23. 23.What does a tilt switch do? (a) slides side to side (b) flips up or down (c) springs back when let go (d) closes when tipped over
24. 24.Which of these is true of a series circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) own switch for each bulb (d) each gets the full volts
25. 25.True or false: a line lifted at a gap is the symbol for a capacitor. (a) False (b) True
26. 26.What does a toggle switch do? (a) closes near a magnet (b) flips up or down (c) works only while pressed (d) closes when tipped over
27. 27.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) bulb (b) wire (c) diode (d) junction
28. 28.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
29. 29.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
30. 30.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
31. 31.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
32. 32.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) by Wi-Fi (d) not joined
33. 33.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
34. 34.🔍 Which is the odd one out? (a) touch a switch when wet (b) poke things in a socket (c) use mains for a project (d) fly kites in open fields
35. 35.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
36. 36.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
37. 37.💡 3 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
38. 38.🔍 Which is the odd one out? (a) a paper strip (b) a metal paper clip (c) a dry cork (d) a plastic ruler
39. 39.What does a push button do? (a) stays where you flip it (b) closes when tipped over (c) flips up or down (d) works only while pressed
40. 40.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) battery (b) junction (c) bulb (d) switch

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