Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 839 · 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 an old-style bulb, which thin wire glows when current flows? (a) the base (b) the glass (c) the switch (d) the filament
2. 2.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) voltmeter (b) cell (c) battery (d) bulb
3. 3.True or false: a night lamp mainly gives out heat. (a) True (b) False
4. 4.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) one (c) two (d) none
5. 5.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
6. 6.💡 2 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
7. 7.⚡ What does a traffic signal mainly change electricity into? (a) heat (b) sound (c) light (d) movement
8. 8.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
9. 9.🔘 What does a switch do in a circuit? (a) changes the voltage (b) opens or closes the loop (c) stores current (d) makes electricity
10. 10.🔘 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 OFF and B is ON. Does the bulb glow? (a) Yes (b) No
11. 11.Which drawing is the symbol for an ammeter? (a) one tall, one short bar (b) a circle with an X in it (c) a circle with A inside (d) triangle against a bar
12. 12.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
13. 13.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) by Wi-Fi (d) not joined
14. 14.Which of these is safe? (a) use mains for a project (b) climb an electric pole (c) dry your hands first (d) poke things in a socket
15. 15.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
16. 16.Which of these is a conductor? (a) a plastic straw (b) a rubber band (c) an iron nail (d) a plastic ruler
17. 17.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
18. 18.Which of these is true of a series circuit? (a) each gets the full volts (b) bulbs share the voltage (c) used in house wiring (d) many paths for current
19. 19.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
20. 20.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
21. 21.True or false: a paper strip is a conductor. (a) False (b) True
22. 22.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
23. 23.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) quick and clear for all (d) symbols are heavier
24. 24.🔋 How many 2 V cells must be joined in series to give 14 V?
25. 25.What does a slide switch do? (a) springs back when let go (b) closes near a magnet (c) slides side to side (d) closes when tipped over
26. 26.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
27. 27.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a paper strip. Does the bulb glow? (a) No (b) Yes
28. 28.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
29. 29.🔍 Which is the odd one out? (a) a dry cork (b) a wooden stick (c) a cotton thread (d) a safety pin
30. 30.Which of these is an insulator? (a) a steel spoon (b) an iron nail (c) a paper strip (d) a metal paper clip
31. 31.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
32. 32.True or false: one tall, one short bar is the symbol for a battery. (a) False (b) True
33. 33.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
34. 34.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a tilt switch (c) a slide switch (d) a reed switch
35. 35.🔘 Which kind of switch stays where you flip it? (a) a tilt switch (b) a reed switch (c) a toggle switch (d) a push button
36. 36.Which drawing is the symbol for a bulb? (a) a circle with an X in it (b) many long-short pairs (c) a line lifted at a gap (d) one tall, one short bar
37. 37.True or false: to climb an electric pole is not safe. (a) True (b) False
38. 38.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
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 paper strip. Does the bulb glow? (a) Yes (b) No
40. 40.🔘 Which kind of switch slides side to side? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a push button

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