Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 138 · 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 of these mainly makes movement? (a) a tube light (b) a room heater (c) a street light (d) an electric toy car
2. 2.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) switch (b) diode (c) wire (d) resistor
3. 3.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
4. 4.🔍 Which is the odd one out? (a) a copper wire (b) a steel spoon (c) a graphite rod (d) a paper strip
5. 5.🔘 Which kind of switch works only while pressed? (a) a slide switch (b) a push button (c) a tilt switch (d) a toggle switch
6. 6.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
7. 7.What does a tilt switch do? (a) slides side to side (b) closes near a magnet (c) closes when tipped over (d) works only while pressed
8. 8.Which of these gives us electricity? (a) a refrigerator (b) a computer (c) a mobile phone (d) a wind turbine
9. 9.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
10. 10.🔍 Which is the odd one out? (a) an LED lamp (b) a night lamp (c) a torch (d) a room heater
11. 11.🔘 Which kind of switch springs back when let go? (a) a slide switch (b) a toggle switch (c) a reed switch (d) a push button
12. 12.🔍 Which is the odd one out? (a) use a cable with cuts (b) build with an adult near (c) throw cells in a fire (d) touch a fallen wire
13. 13.🔦 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) Yes (b) No
14. 14.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
15. 15.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) by Wi-Fi (c) in parallel (d) not joined
16. 16.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
17. 17.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) Yes (b) No
18. 18.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
19. 19.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
20. 20.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is OFF and D is ON. Does the bulb glow? (a) No (b) Yes
21. 21.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
22. 22.🔍 Which is the odd one out? (a) climb an electric pole (b) touch a switch when wet (c) stop if a part gets hot (d) poke things in a socket
23. 23.Which of these mainly gives out light? (a) a school bell (b) an LED lamp (c) a siren (d) a loudspeaker
24. 24.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
25. 25.True or false: a tilt switch closes when tipped over. (a) False (b) True
26. 26.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) open (b) closed
27. 27.🔋 7 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)? =
28. 28.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
29. 29.🔘 A bulb and a cell are joined through 5 switches on 5 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
30. 30.🔋 A 12 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
31. 31.Which of these mainly gives out light? (a) a toaster (b) a street light (c) a buzzer (d) an electric iron
32. 32.🔋 Does a mobile phone give electricity or use electricity? (a) gives electricity (b) uses electricity
33. 33.🔍 Which is the odd one out? (a) build with an adult near (b) use small battery cells (c) open a phone charger (d) take cells out after use
34. 34.True or false: a tube light mainly makes movement. (a) False (b) True
35. 35.Which of these mainly gives out light? (a) a doorbell (b) a buzzer (c) a torch (d) a siren
36. 36.🔦 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) Yes (b) No
37. 37.Which of these uses electricity? (a) a power station (b) a solar panel (c) a cell (d) a computer
38. 38.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
39. 39.True or false: to fly kites in open fields is not safe. (a) False (b) True
40. 40.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pour water on them (b) shout for an adult (c) wait and watch (d) pull them by the hand

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