Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 876 · 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 cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) both lines (d) the shorter line
2. 2.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
3. 3.🔍 Which is the odd one out? (a) a traffic signal (b) a tube light (c) a loudspeaker (d) a street light
4. 4.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
5. 5.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) bulb (b) wire (c) cell (d) ammeter
6. 6.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) never (c) when either is ON (d) when both are ON
7. 7.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) No (b) Yes
9. 9.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
10. 10.True or false: a push button works only while pressed. (a) True (b) False
11. 11.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) used in house wiring (d) one bulb out, all go out
12. 12.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) little stars (d) dotted circles
13. 13.💡 In a series circuit, how many paths does the current have? (a) one (b) none (c) two (d) one for each bulb
14. 14.🔘 A bulb and a cell are joined through 4 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
15. 15.🔦 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 cotton thread. Does the bulb glow? (a) Yes (b) No
16. 16.Which of these means the circuit is closed? (a) a cell is taken out (b) a wire is cut (c) the loop is complete (d) a wire has come loose
17. 17.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
18. 18.Which of these means the circuit is closed? (a) the switch is OFF (b) a cell is taken out (c) a wire has come loose (d) all wires are joined
19. 19.Which of these is a conductor? (a) a plastic ruler (b) a woollen thread (c) a plastic straw (d) a steel coin
20. 20.Which drawing is the symbol for a cell? (a) a circle with an X in it (b) a dot where wires meet (c) a circle with a cross (d) a long and a short line
21. 21.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
22. 22.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) each gets full voltage (d) to make bulbs dim
23. 23.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) light energy (d) wind energy
24. 24.💡 6 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. Does bulb 4 glow? (a) Yes (b) No
25. 25.Which of these is safe? (a) use mains for a project (b) stay away from pylons (c) throw cells in a fire (d) touch a switch when wet
26. 26.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) a single current path (d) each gets the full volts
27. 27.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
28. 28.Which of these is not safe? (a) dry your hands first (b) stay away from pylons (c) touch a switch when wet (d) take cells out after use
29. 29.🔍 Which is the odd one out? (a) fly a kite near wires (b) stop if a part gets hot (c) keep drinks far away (d) stay away from pylons
30. 30.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they get dimmer (d) they all go out
31. 31.🔋 Does a refrigerator give electricity or use electricity? (a) uses electricity (b) gives electricity
32. 32.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the switch (b) the base (c) the filament (d) the glass
33. 33.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a reed switch (c) a slide switch (d) a push button
34. 34.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) sound energy (c) wind energy (d) electrical energy
35. 35.True or false: to use small battery cells is safe. (a) True (b) False
36. 36.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
37. 37.🔋 How many 2 V cells must be joined in series to give 6 V?
38. 38.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) one bulb out, all go out (d) each gets the full volts
39. 39.🔦 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 steel coin. Does the bulb glow? (a) Yes (b) No
40. 40.🔋 How many volts does one ordinary torch cell give? (a) 230 V (b) 15 V (c) 0.5 V (d) 1.5 V

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