Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 906 · 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.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
2. 2.Which drawing is the symbol for a capacitor? (a) a small empty box (b) two equal parallel lines (c) a circle with A inside (d) a long and a short line
3. 3.True or false: a slide switch slides side to side. (a) False (b) True
4. 4.⚡ What does a doorbell mainly change electricity into? (a) movement (b) heat (c) sound (d) light
5. 5.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) all wires are joined (d) the bulb is unscrewed
6. 6.🔍 Which is the odd one out? (a) a rice cooker (b) a toaster (c) an electric iron (d) a loudspeaker
7. 7.🔦 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 aluminium foil. Does the bulb glow? (a) Yes (b) No
8. 8.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
9. 9.Which of these is true of a series circuit? (a) many paths for current (b) a break stops every bulb (c) one out, the rest glow (d) each gets the full volts
10. 10.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) straight lines (d) dotted circles
11. 11.🔍 Which is the odd one out? (a) an electric iron (b) a traffic signal (c) a room heater (d) a water heater
12. 12.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
13. 13.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
14. 14.True or false: a mixer grinder mainly makes movement. (a) False (b) True
15. 15.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
16. 16.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) movement energy (c) light energy (d) chemical energy
17. 17.Which of these uses electricity? (a) a power station (b) a generator (c) a television (d) a wind turbine
18. 18.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
19. 19.💡 6 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 2 is taken out of its holder. How many bulbs glow?
20. 20.True or false: a safety pin is an insulator. (a) True (b) False
21. 21.Which of these gives us electricity? (a) a washing machine (b) a solar panel (c) a refrigerator (d) a computer
22. 22.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
23. 23.💡 A battery lights 2 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
24. 24.Which of these mainly makes sound? (a) a street light (b) a mixer grinder (c) a doorbell (d) a torch
25. 25.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
26. 26.🔍 Which is the odd one out? (a) fly kites in open fields (b) stop if a part gets hot (c) take cells out after use (d) touch a switch when wet
27. 27.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
28. 28.💡 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
29. 29.🔋 How many 2 V cells must be joined in series to give 14 V?
30. 30.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
31. 31.✏️ In a circuit diagram, which part is drawn as a straight line? (a) cell (b) wire (c) capacitor (d) battery
32. 32.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
33. 33.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
34. 34.What does a push button do? (a) flips up or down (b) stays where you flip it (c) springs back when let go (d) slides side to side
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) Yes (b) No
36. 36.Which of these is safe? (a) touch a switch when wet (b) stop if a part gets hot (c) poke things in a socket (d) climb an electric pole
37. 37.🔍 Which is the odd one out? (a) an exhaust fan (b) an electric toy car (c) a table fan (d) a doorbell
38. 38.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
39. 39.True or false: if the switch is OFF, the circuit is open and no current flows. (a) True (b) False
40. 40.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 1.5 V (c) 12 V (d) 230 V

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