Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 198 · 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.True or false: a mixer grinder mainly gives out light. (a) False (b) True
2. 2.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they explode (d) they get dimmer
3. 3.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a fuse or MCB (b) a plug top (c) a bulb (d) a long wire
4. 4.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
5. 5.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) wind energy (c) electrical energy (d) sound energy
6. 6.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 9 V (c) 1.5 V (d) 230 V
7. 7.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
8. 8.🔋 Does a television give electricity or use electricity? (a) gives electricity (b) uses electricity
9. 9.True or false: one tall, one short bar is the symbol for an LED. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a safety pin (b) a woollen thread (c) a graphite rod (d) a copper wire
11. 11.⚡ What does a rice cooker mainly change electricity into? (a) movement (b) heat (c) sound (d) light
12. 12.🔘 A bulb and a cell are joined through 6 switches on 6 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?
13. 13.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
14. 14.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) cell (c) capacitor (d) resistor
15. 15.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
16. 16.⚡ What does a street light mainly change electricity into? (a) light (b) sound (c) movement (d) heat
17. 17.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
18. 18.🔋 Does a bicycle dynamo give electricity or use electricity? (a) uses electricity (b) gives electricity
19. 19.Which drawing is the symbol for a resistor? (a) triangle against a bar (b) a plain rectangle (c) two or more cell symbols (d) a circle with an X in it
20. 20.🔍 Which is the odd one out? (a) keep drinks far away (b) build with an adult near (c) stop if a part gets hot (d) throw cells in a fire
21. 21.True or false: an electric toy car mainly makes movement. (a) True (b) False
22. 22.⚡ What does a night lamp mainly change electricity into? (a) movement (b) sound (c) heat (d) light
23. 23.True or false: a circle with V inside is the symbol for a diode. (a) True (b) False
24. 24.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
25. 25.🔍 Which is the odd one out? (a) touch a switch when wet (b) use small battery cells (c) take cells out after use (d) dry your hands first
26. 26.Which of these uses electricity? (a) a bicycle dynamo (b) a computer (c) a power station (d) a generator
27. 27.True or false: if the loop is complete, the circuit is open and no current flows. (a) False (b) True
28. 28.🔘 Which kind of switch closes near a magnet? (a) a reed switch (b) a toggle switch (c) a tilt switch (d) a push button
29. 29.True or false: to take cells out after use is not safe. (a) False (b) True
30. 30.🔦 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
31. 31.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
32. 32.Which of these is true of a parallel circuit? (a) each gets the full volts (b) a break stops every bulb (c) a single current path (d) bulbs share the voltage
33. 33.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
34. 34.🔌 Most metals are good … (a) insulators (b) batteries (c) magnets only (d) conductors
35. 35.🔍 Which is the odd one out? (a) climb an electric pole (b) build with an adult near (c) stay away from pylons (d) keep drinks far away
36. 36.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) stay away from pylons (b) fly kites in open fields (c) build with an adult near (d) poke things in a socket
38. 38.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
39. 39.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) when both are OFF (c) never (d) when both are ON
40. 40.🔍 Which is the odd one out? (a) stop if a part gets hot (b) touch a fallen wire (c) keep drinks far away (d) use small battery cells

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