Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 920 · 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 kind of switch springs back when let go? (a) a tilt switch (b) a push button (c) a toggle switch (d) a slide switch
2. 2.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) electrical energy (c) wind energy (d) nuclear energy
3. 3.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.🔁 What must there be for a current to flow? (a) a broken path (b) one loose end (c) a complete loop (d) a plastic gap
5. 5.Which of these is not safe? (a) build with an adult near (b) use mains for a project (c) fly kites in open fields (d) use small battery cells
6. 6.🔘 Which kind of switch slides side to side? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a push button
7. 7.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) straight lines (d) wavy lines
8. 8.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to make bulbs dim (d) to save copper only
9. 9.🔦 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 a wooden stick. Does the bulb glow? (a) Yes (b) No
10. 10.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
11. 11.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a smaller voltage (c) a bigger voltage (d) the same voltage
12. 12.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
13. 13.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
14. 14.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
15. 15.True or false: a tilt switch closes near a magnet. (a) True (b) False
16. 16.🔋 6 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
17. 17.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) wire (b) cell (c) bulb (d) LED
18. 18.⚠️ Is it safe to take cells out after use? (a) not safe (b) safe
19. 19.True or false: two equal parallel lines is the symbol for a diode. (a) True (b) False
20. 20.Which of these is true of a series circuit? (a) each gets the full volts (b) a single current path (c) many paths for current (d) used in house wiring
21. 21.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
22. 22.True or false: if a cell is taken out, the circuit is open and no current flows. (a) True (b) False
23. 23.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
24. 24.🔌 Most metals are good … (a) batteries (b) conductors (c) magnets only (d) insulators
25. 25.🔍 Which is the odd one out? (a) climb an electric pole (b) stop if a part gets hot (c) dry your hands first (d) keep drinks far away
26. 26.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 1.5 V (d) 0.5 V
27. 27.Which drawing is the symbol for a motor? (a) triangle against a bar (b) triangle, bar and arrows (c) a straight line (d) a circle with M inside
28. 28.🔍 Which is the odd one out? (a) dry your hands first (b) use small battery cells (c) fly a kite near wires (d) keep drinks far away
29. 29.True or false: a rice cooker mainly gives out heat. (a) False (b) True
30. 30.True or false: if a wire has come loose, the circuit is open and no current flows. (a) False (b) True
31. 31.⚠️ Is it safe to stay away from pylons? (a) not safe (b) safe
32. 32.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) two or more cells joined (d) one single wire
33. 33.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 12 V (c) 230 V (d) 1.5 V
34. 34.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
35. 35.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) in series (d) not joined
36. 36.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
37. 37.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) plastic is an insulator (d) to make them heavy
38. 38.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) symbols are heavier (c) quick and clear for all (d) to make it colourful
39. 39.⚠️ Is it safe to open a phone charger? (a) not safe (b) safe
40. 40.🔍 Which is the odd one out? (a) a school bell (b) a buzzer (c) a doorbell (d) an electric iron

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