Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 955 · 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.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) little stars (d) dotted circles
2. 2.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
3. 3.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
4. 4.Which of these is not safe? (a) keep drinks far away (b) use small battery cells (c) build with an adult near (d) poke things in a socket
5. 5.🔌 Most metals are good … (a) batteries (b) conductors (c) insulators (d) magnets only
6. 6.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
7. 7.⚡ What does a water heater mainly change electricity into? (a) movement (b) sound (c) heat (d) light
8. 8.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
9. 9.💡 In a series circuit, how many paths does the current have? (a) two (b) one for each bulb (c) none (d) one
10. 10.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
11. 11.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) dry your hands first (b) use small battery cells (c) stop if a part gets hot (d) touch a switch when wet
13. 13.True or false: a reed switch closes near a magnet. (a) False (b) True
14. 14.Which of these uses electricity? (a) a washing machine (b) a generator (c) a solar panel (d) a power station
15. 15.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
16. 16.⚠️ Is it safe to climb an electric pole? (a) safe (b) not safe
17. 17.🔍 Which is the odd one out? (a) poke things in a socket (b) open a phone charger (c) keep drinks far away (d) use a cable with cuts
18. 18.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) Yes (b) No
19. 19.Which drawing is the symbol for a cell? (a) a circle with a cross (b) one tall, one short bar (c) triangle, bar and arrows (d) many long-short pairs
20. 20.Which of these means the circuit is closed? (a) a wire has come loose (b) the switch is ON (c) the bulb is unscrewed (d) a wire is cut
21. 21.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) to hide the circuit (d) symbols are heavier
22. 22.🔘 Which kind of switch slides side to side? (a) a push button (b) a toggle switch (c) a slide switch (d) a reed switch
23. 23.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) No (b) Yes
24. 24.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) cell (c) resistor (d) junction
25. 25.Which of these gives us electricity? (a) a washing machine (b) a cell (c) a mobile phone (d) a television
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) diode (b) capacitor (c) bulb (d) ammeter
27. 27.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) pour water on them (c) shout for an adult (d) wait and watch
28. 28.🔍 Which is the odd one out? (a) a traffic signal (b) an electric kettle (c) a tube light (d) a night lamp
29. 29.True or false: a circle with V inside is the symbol for a motor. (a) False (b) True
30. 30.🔘 What does a switch do in a circuit? (a) makes electricity (b) stores current (c) changes the voltage (d) opens or closes the loop
31. 31.🔦 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) Yes (b) No
32. 32.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
33. 33.True or false: a circle with M inside is the symbol for a motor. (a) True (b) False
34. 34.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) own switch for each bulb (d) one bulb out, all go out
35. 35.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
36. 36.✏️ In a circuit diagram, which part is drawn as a straight line? (a) ammeter (b) battery (c) wire (d) diode
37. 37.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) two or more cells joined (d) a switch with a lid
38. 38.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
39. 39.True or false: to poke things in a socket is safe. (a) False (b) True
40. 40.🔘 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 ON and B is ON. Does the bulb glow? (a) No (b) Yes

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