Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 526 · 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.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
2. 2.🔍 Which is the odd one out? (a) a torch (b) a street light (c) a tube light (d) a school bell
3. 3.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) light energy (c) wind energy (d) chemical energy
4. 4.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) the same voltage (c) no voltage (d) double the voltage
5. 5.🔍 Which is the odd one out? (a) a doorbell (b) a loudspeaker (c) a school bell (d) a room heater
6. 6.🔋 3 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)? =
7. 7.Which of these means the circuit is closed? (a) a wire has come loose (b) a wire is cut (c) all wires are joined (d) the bulb is unscrewed
8. 8.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
9. 9.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
10. 10.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
11. 11.Which of these mainly makes sound? (a) a loudspeaker (b) a toaster (c) an exhaust fan (d) a torch
12. 12.💡 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
13. 13.💡 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) the same (c) dimmer
14. 14.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
15. 15.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
16. 16.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) Yes (b) No
17. 17.🔦 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) No (b) Yes
18. 18.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
19. 19.🔦 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 plastic ruler. Does the bulb glow? (a) Yes (b) No
20. 20.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the steel shaft (c) the plastic handle (d) the metal tip
21. 21.What does a slide switch do? (a) works only while pressed (b) slides side to side (c) stays where you flip it (d) springs back when let go
22. 22.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
23. 23.🔍 Which is the odd one out? (a) build with an adult near (b) open a phone charger (c) dry your hands first (d) take cells out after use
24. 24.Which drawing is the symbol for a junction? (a) one tall, one short bar (b) a circle with a cross (c) a dot where wires meet (d) triangle, bar and arrows
25. 25.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
26. 26.Which of these is safe? (a) climb an electric pole (b) touch a switch when wet (c) stay away from pylons (d) poke things in a socket
27. 27.True or false: a water heater mainly gives out heat. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) motor (b) bulb (c) capacitor (d) switch
29. 29.💡 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
30. 30.Which of these is true of a series circuit? (a) one out, the rest glow (b) each gets the full volts (c) own switch for each bulb (d) a single current path
31. 31.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
32. 32.True or false: a straight line is the symbol for a bulb. (a) False (b) True
33. 33.Which of these mainly gives out light? (a) a toaster (b) a ceiling fan (c) an LED lamp (d) a rice cooker
34. 34.Which of these is not safe? (a) poke things in a socket (b) keep drinks far away (c) use small battery cells (d) fly kites in open fields
35. 35.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) LED (b) cell (c) voltmeter (d) diode
36. 36.True or false: a mixer grinder mainly makes movement. (a) True (b) False
37. 37.Which of these is safe? (a) fly kites in open fields (b) use a cable with cuts (c) poke things in a socket (d) touch a switch when wet
38. 38.Which of these is safe? (a) dry your hands first (b) use mains for a project (c) climb an electric pole (d) use a cable with cuts
39. 39.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 2 glow? (a) Yes (b) No
40. 40.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) so all go off together (d) to save copper only

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