Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 979 · 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 uses electricity? (a) a washing machine (b) a solar panel (c) a bicycle dynamo (d) a power station
2. 2.What does a slide switch do? (a) stays where you flip it (b) closes when tipped over (c) closes near a magnet (d) slides side to side
3. 3.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
4. 4.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
5. 5.True or false: “a single current path” is true of a series circuit. (a) True (b) False
6. 6.⚡ A fan changes electrical energy mainly into which kind of energy? (a) chemical energy (b) movement energy (c) light energy (d) sound energy
7. 7.True or false: a reed switch closes near a magnet. (a) False (b) True
8. 8.🔋 Does a mobile phone give electricity or use electricity? (a) gives electricity (b) uses electricity
9. 9.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
10. 10.True or false: to fly kites in open fields is safe. (a) True (b) False
11. 11.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is OFF (c) the switch is ON (d) a wire is cut
12. 12.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
13. 13.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
14. 14.True or false: if a wire has come loose, the circuit is open and no current flows. (a) False (b) True
15. 15.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a reed switch (c) a push button (d) a tilt switch
16. 16.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) bulb (b) LED (c) diode (d) capacitor
17. 17.🔍 Which is the odd one out? (a) a water heater (b) an electric kettle (c) an electric iron (d) a buzzer
18. 18.💡 4 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. How many bulbs glow?
19. 19.⚡ What does a street light mainly change electricity into? (a) sound (b) light (c) movement (d) heat
20. 20.🔋 8 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
21. 21.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is OFF. Does the bulb glow? (a) Yes (b) No
22. 22.True or false: a plain rectangle is the symbol for a diode. (a) True (b) False
23. 23.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
24. 24.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) sound (c) electric current (d) friction
25. 25.⚡ What does a buzzer mainly change electricity into? (a) sound (b) heat (c) light (d) movement
26. 26.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
27. 27.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) Yes (b) No
28. 28.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
29. 29.Which drawing is the symbol for a wire? (a) a circle with V inside (b) a circle with A inside (c) a straight line (d) a circle with a cross
30. 30.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
31. 31.⚡ What does a table fan mainly change electricity into? (a) sound (b) heat (c) movement (d) light
32. 32.What does a toggle switch do? (a) works only while pressed (b) closes near a magnet (c) slides side to side (d) stays where you flip it
33. 33.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the glass (c) the switch (d) the base
34. 34.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) resistor (b) junction (c) ammeter (d) LED
35. 35.💡 5 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
36. 36.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
37. 37.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
38. 38.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a plug top (c) a fuse or MCB (d) a long wire
39. 39.Which drawing is the symbol for a diode? (a) a circle with an X in it (b) a circle with A inside (c) a line lifted at a gap (d) triangle against a bar
40. 40.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)

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