Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 298 · 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 means the circuit is closed? (a) the switch is OFF (b) a wire is cut (c) a cell is taken out (d) the loop is complete
2. 2.True or false: a dot where wires meet is the symbol for a cell. (a) True (b) False
3. 3.💡 A battery lights 5 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
4. 4.💡 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) dimmer (c) the same
5. 5.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) LED (b) junction (c) battery (d) voltmeter
6. 6.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
7. 7.⚡ What does an electric toy car mainly change electricity into? (a) light (b) movement (c) sound (d) heat
8. 8.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
9. 9.Which of these is not safe? (a) fly kites in open fields (b) use mains for a project (c) stay away from pylons (d) use small battery cells
10. 10.🔋 Does a bicycle dynamo give electricity or use electricity? (a) uses electricity (b) gives electricity
11. 11.⚡ What does an LED lamp mainly change electricity into? (a) sound (b) movement (c) heat (d) light
12. 12.🔍 Which is the odd one out? (a) fly kites in open fields (b) fly a kite near wires (c) build with an adult near (d) stop if a part gets hot
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
14. 14.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) photons (c) water drops (d) electrons
15. 15.💡 3 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 1 glow? (a) Yes (b) No
16. 16.True or false: if all wires are joined, the circuit is open and no current flows. (a) True (b) False
17. 17.True or false: a reed switch closes near a magnet. (a) False (b) True
18. 18.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
19. 19.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
20. 20.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
21. 21.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
22. 22.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a cell (c) a switch that is ON (d) a conductor
23. 23.🔋 A 12 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
24. 24.True or false: to stop if a part gets hot is not safe. (a) True (b) False
25. 25.🔋 What is a battery? (a) a switch with a lid (b) two or more cells joined (c) one single wire (d) a kind of bulb
26. 26.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a circle with M inside (c) triangle against a bar (d) two equal parallel lines
27. 27.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
28. 28.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. How many bulbs glow?
29. 29.What does a slide switch do? (a) springs back when let go (b) works only while pressed (c) stays where you flip it (d) slides side to side
30. 30.True or false: a loudspeaker mainly gives out heat. (a) True (b) False
31. 31.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
32. 32.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
33. 33.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the switch (b) the filament (c) the glass (d) the base
34. 34.Which of these is not safe? (a) use a cable with cuts (b) keep drinks far away (c) dry your hands first (d) take cells out after use
35. 35.💡 3 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
36. 36.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a long wire (c) a plug top (d) a fuse or MCB
37. 37.🔦 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 plastic ruler. Does the bulb glow? (a) Yes (b) No
38. 38.⚡ What does a table fan mainly change electricity into? (a) sound (b) light (c) heat (d) movement
39. 39.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
40. 40.Which of these is a conductor? (a) a brass key (b) a rubber band (c) a dry cork (d) a plastic straw

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids