Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 865 · 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 wind turbine (b) a cell (c) a mobile phone (d) a solar panel
2. 2.🔋 Does a television give electricity or use electricity? (a) gives electricity (b) uses electricity
3. 3.Which of these is a conductor? (a) a rubber band (b) a dry cork (c) a woollen thread (d) a copper wire
4. 4.💡 A battery lights 3 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
5. 5.True or false: a steel spoon is an insulator. (a) False (b) True
6. 6.Which of these is not safe? (a) use small battery cells (b) poke things in a socket (c) keep drinks far away (d) build with an adult near
7. 7.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic is an insulator (c) to make them heavy (d) plastic makes current
8. 8.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
9. 9.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
10. 10.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) by Wi-Fi (c) in series (d) in parallel
11. 11.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) wire (b) diode (c) cell (d) battery
12. 12.⚠️ Is it safe to throw cells in a fire? (a) not safe (b) safe
13. 13.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
14. 14.Which drawing is the symbol for a motor? (a) a circle with M inside (b) many long-short pairs (c) two or more cell symbols (d) a circle with A inside
15. 15.🔍 Which is the odd one out? (a) dry your hands first (b) use mains for a project (c) stop if a part gets hot (d) keep drinks far away
16. 16.⚡ What does a tube light mainly change electricity into? (a) sound (b) light (c) movement (d) heat
17. 17.Which of these mainly makes movement? (a) an electric drill (b) a siren (c) a loudspeaker (d) a buzzer
18. 18.🔁 What must there be for a current to flow? (a) a plastic gap (b) a complete loop (c) a broken path (d) one loose end
19. 19.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
20. 20.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they all go out (d) they get dimmer
21. 21.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it is just untidy (c) water carries current (d) it spoils the paint
22. 22.Which of these mainly makes movement? (a) a buzzer (b) a ceiling fan (c) a doorbell (d) a traffic signal
23. 23.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) to hide the circuit (d) quick and clear for all
24. 24.⚡ What does a mixer grinder mainly change electricity into? (a) sound (b) heat (c) light (d) movement
25. 25.Which of these gives us electricity? (a) an air conditioner (b) a washing machine (c) a generator (d) a refrigerator
26. 26.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
27. 27.Which of these is safe? (a) stop if a part gets hot (b) poke things in a socket (c) throw cells in a fire (d) touch a switch when wet
28. 28.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) little stars (d) straight lines
29. 29.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
30. 30.Which of these is true of a series circuit? (a) bulbs share the voltage (b) each gets the full volts (c) own switch for each bulb (d) many paths for current
31. 31.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
32. 32.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
33. 33.💡 Why is house wiring done in parallel? (a) to save copper only (b) each gets full voltage (c) to make bulbs dim (d) so all go off together
34. 34.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by an iron nail. Does the bulb glow? (a) Yes (b) No
35. 35.True or false: a tilt switch flips up or down. (a) True (b) False
36. 36.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
37. 37.🔍 Which is the odd one out? (a) a loudspeaker (b) a doorbell (c) a table fan (d) a buzzer
38. 38.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
39. 39.🔘 Which kind of switch works only while pressed? (a) a tilt switch (b) a toggle switch (c) a push button (d) a slide switch
40. 40.Which of these is true of a series circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) many paths for current (d) each gets the full volts

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