Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 491 · 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 solar panel changes which kind of energy into electricity? (a) chemical energy (b) wind energy (c) sound energy (d) light energy
2. 2.🔍 Which is the odd one out? (a) climb an electric pole (b) touch a switch when wet (c) stay away from pylons (d) use mains for a project
3. 3.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
4. 4.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) the longer line (d) both lines
5. 5.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) one (c) two (d) none
6. 6.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the glass (b) the switch (c) the filament (d) the base
7. 7.🔦 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) Yes (b) No
8. 8.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
9. 9.What does a slide switch do? (a) stays where you flip it (b) works only while pressed (c) springs back when let go (d) slides side to side
10. 10.🔍 Which is the odd one out? (a) touch a fallen wire (b) stay away from pylons (c) use small battery cells (d) take cells out after use
11. 11.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) by Wi-Fi (d) in series
12. 12.True or false: a glass marble is an insulator. (a) True (b) False
13. 13.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
14. 14.Which drawing is the symbol for a wire? (a) triangle against a bar (b) two or more cell symbols (c) a circle with V inside (d) a straight line
15. 15.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is an insulator (c) plastic makes current (d) plastic is a conductor
16. 16.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
17. 17.💡 4 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?
18. 18.What does a reed switch do? (a) closes when tipped over (b) stays where you flip it (c) flips up or down (d) closes near a magnet
19. 19.🔘 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 OFF, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
20. 20.True or false: a mixer grinder mainly makes movement. (a) False (b) True
21. 21.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
22. 22.True or false: a buzzer mainly gives out light. (a) True (b) False
23. 23.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
24. 24.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
25. 25.Which of these is an insulator? (a) a brass key (b) aluminium foil (c) a ceramic cup (d) a steel spoon
26. 26.Which of these is not safe? (a) keep drinks far away (b) fly kites in open fields (c) climb an electric pole (d) build with an adult near
27. 27.True or false: to use a cable with cuts is safe. (a) False (b) True
28. 28.⚡ What does an electric kettle mainly change electricity into? (a) movement (b) sound (c) heat (d) light
29. 29.Which of these uses electricity? (a) a solar panel (b) a television (c) a battery (d) a bicycle dynamo
30. 30.💡 6 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?
31. 31.True or false: two or more cell symbols is the symbol for a resistor. (a) True (b) False
32. 32.True or false: a toggle switch slides side to side. (a) True (b) False
33. 33.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
34. 34.🔍 Which is the odd one out? (a) a rice cooker (b) a room heater (c) a buzzer (d) a toaster
35. 35.🔋 What should you do with used-up cells? (a) throw them in a fire (b) cut them open (c) give them for recycling (d) bury them in soil
36. 36.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) one bulb out, all go out (d) each gets the full volts
37. 37.True or false: to use small battery cells is not safe. (a) True (b) False
38. 38.Which of these is not safe? (a) stay away from pylons (b) take cells out after use (c) touch a fallen wire (d) build with an adult near
39. 39.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
40. 40.What does a toggle switch do? (a) works only while pressed (b) flips up or down (c) slides side to side (d) springs back when let go

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