Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 185 · 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 school bell (b) a table fan (c) a siren (d) a tube light
2. 2.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) straight lines (d) dotted circles
4. 4.Which of these mainly gives out heat? (a) a traffic signal (b) a mixer grinder (c) a room heater (d) an exhaust fan
5. 5.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in parallel (c) not joined (d) in series
6. 6.True or false: a steel spoon is an insulator. (a) True (b) False
7. 7.Which of these is safe? (a) fly a kite near wires (b) stay away from pylons (c) throw cells in a fire (d) touch a switch when wet
8. 8.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a push button
9. 9.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
10. 10.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 0.5 V (c) 230 V (d) 1.5 V
11. 11.Which of these is not safe? (a) use small battery cells (b) fly kites in open fields (c) build with an adult near (d) throw cells in a fire
12. 12.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
13. 13.💡 A battery lights 4 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.🔍 Which is the odd one out? (a) an electric drill (b) an electric toy car (c) an exhaust fan (d) a buzzer
15. 15.🔍 Which is the odd one out? (a) a wooden stick (b) a cotton thread (c) aluminium foil (d) a ceramic cup
16. 16.Which of these mainly gives out light? (a) a loudspeaker (b) an electric kettle (c) an LED lamp (d) a doorbell
17. 17.⚡ What does an electric kettle mainly change electricity into? (a) movement (b) sound (c) heat (d) light
18. 18.True or false: a water heater mainly gives out heat. (a) True (b) False
19. 19.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
20. 20.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
21. 21.Which of these mainly gives out light? (a) a room heater (b) a night lamp (c) an exhaust fan (d) a mixer grinder
22. 22.🔘 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 ON and C is ON. Does the bulb glow? (a) No (b) Yes
23. 23.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is ON (c) a wire is cut (d) the switch is OFF
24. 24.True or false: a woollen thread is an insulator. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) fly kites in open fields (b) keep drinks far away (c) build with an adult near (d) throw cells in a fire
26. 26.True or false: an LED lamp mainly gives out heat. (a) False (b) True
27. 27.⚡ What does a siren mainly change electricity into? (a) heat (b) light (c) sound (d) movement
28. 28.Which of these means the circuit is open? (a) a cell is taken out (b) all wires are joined (c) the switch is ON (d) the loop is complete
29. 29.Which of these gives us electricity? (a) a computer (b) a washing machine (c) a solar panel (d) an air conditioner
30. 30.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: a rubber eraser is a conductor. (a) False (b) True
32. 32.💡 2 identical bulbs are joined in series with a 2 V battery (ideal wires). How many volts does each bulb get? =
33. 33.🔦 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
34. 34.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
36. 36.🔦 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) Yes (b) No
37. 37.🔘 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 ON and B is OFF. Does the bulb glow? (a) No (b) Yes
38. 38.True or false: an electric kettle mainly gives out light. (a) True (b) False
39. 39.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
40. 40.💡 A battery lights 2 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

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