Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 236 · 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 circuit diagram, which part is drawn as a plain rectangle? (a) diode (b) resistor (c) battery (d) motor
2. 2.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they all go out (d) they keep glowing
3. 3.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a plug top (c) a fuse or MCB (d) a long wire
4. 4.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
5. 5.Which of these mainly makes movement? (a) a buzzer (b) an electric drill (c) a night lamp (d) a tube light
6. 6.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
7. 7.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 1.5 V (c) 0.5 V (d) 230 V
8. 8.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
9. 9.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) symbols are heavier (d) to hide the circuit
10. 10.⚡ A cell changes stored chemical energy into which kind of energy? (a) wind energy (b) sound energy (c) nuclear energy (d) electrical energy
11. 11.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
12. 12.💡 A battery lights 5 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
13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) Yes (b) No
14. 14.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
15. 15.🔋 A 9 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
16. 16.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) bulbs share the voltage (d) own switch for each bulb
17. 17.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) it does not matter (b) none (c) both of them (d) only one
18. 18.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
19. 19.Which of these is an insulator? (a) a copper wire (b) a steel coin (c) a metal paper clip (d) a dry cork
20. 20.Which of these is true of a series circuit? (a) own switch for each bulb (b) a single current path (c) one out, the rest glow (d) used in house wiring
21. 21.Which of these is safe? (a) open a phone charger (b) touch a switch when wet (c) poke things in a socket (d) keep drinks far away
22. 22.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a toggle switch (c) a reed switch (d) a tilt switch
23. 23.Which drawing is the symbol for a bulb? (a) two equal parallel lines (b) a line lifted at a gap (c) one tall, one short bar (d) a circle with a cross
24. 24.True or false: if all wires are joined, the circuit is closed and current flows. (a) False (b) True
25. 25.True or false: a slide switch springs back when let go. (a) True (b) False
26. 26.⚡ A fan changes electrical energy mainly into which kind of energy? (a) chemical energy (b) movement energy (c) sound energy (d) light energy
27. 27.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
28. 28.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
29. 29.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) junction (b) switch (c) battery (d) voltmeter
30. 30.Which of these is a conductor? (a) a cotton thread (b) a plastic ruler (c) a metal paper clip (d) a wooden stick
31. 31.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
32. 32.Which of these is a conductor? (a) a plastic ruler (b) a glass marble (c) a copper wire (d) a dry cork
33. 33.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a push button
34. 34.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
35. 35.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity
36. 36.What does a tilt switch do? (a) springs back when let go (b) closes when tipped over (c) slides side to side (d) stays where you flip it
37. 37.Which drawing is the symbol for an ammeter? (a) a circle with a cross (b) one tall, one short bar (c) a circle with A inside (d) a circle with M inside
38. 38.🔦 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 rubber band. Does the bulb glow? (a) No (b) Yes
39. 39.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
40. 40.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open

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