Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 936 · 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.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) diode (b) capacitor (c) battery (d) voltmeter
2. 2.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
3. 3.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
4. 4.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) Yes (b) No
5. 5.Which of these is true of a series circuit? (a) a break stops every bulb (b) one out, the rest glow (c) used in house wiring (d) many paths for current
6. 6.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) ammeter (b) resistor (c) battery (d) bulb
7. 7.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
8. 8.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) water drops (c) electrons (d) photons
9. 9.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
10. 10.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) ammeter (b) cell (c) resistor (d) junction
11. 11.🔋 4 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
12. 12.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
13. 13.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
14. 14.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 230 V (c) 9 V (d) 12 V
15. 15.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
16. 16.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) shout for an adult (c) pull them by the hand (d) pour water on them
17. 17.🔍 Which is the odd one out? (a) open a phone charger (b) use small battery cells (c) poke things in a socket (d) fly a kite near wires
18. 18.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
19. 19.🔍 Which is the odd one out? (a) a brass key (b) a steel coin (c) a cotton thread (d) a copper wire
20. 20.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) plastic (d) rubber
21. 21.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a small empty box (c) many long-short pairs (d) triangle against a bar
22. 22.🔍 Which is the odd one out? (a) a rice cooker (b) an electric iron (c) a room heater (d) a doorbell
23. 23.🔍 Which is the odd one out? (a) build with an adult near (b) open a phone charger (c) stop if a part gets hot (d) use small battery cells
24. 24.🔋 4 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)? =
25. 25.Which drawing is the symbol for a voltmeter? (a) triangle, bar and arrows (b) a plain rectangle (c) one tall, one short bar (d) a circle with V inside
26. 26.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
27. 27.🔍 Which is the odd one out? (a) a metal paper clip (b) a graphite rod (c) a steel spoon (d) a woollen thread
28. 28.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
29. 29.🔋 Does a wind turbine give electricity or use electricity? (a) gives electricity (b) uses electricity
30. 30.🔘 When a switch is ON, the circuit is … (a) cut (b) broken (c) open (d) closed
31. 31.🔘 Which kind of switch flips up or down? (a) a push button (b) a tilt switch (c) a toggle switch (d) a slide switch
32. 32.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
33. 33.True or false: a plain rectangle is the symbol for a resistor. (a) True (b) False
34. 34.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) junction (b) bulb (c) capacitor (d) cell
35. 35.⚡ What does a torch mainly change electricity into? (a) light (b) sound (c) movement (d) heat
36. 36.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) bulbs share the voltage (d) each gets the full volts
37. 37.Which of these mainly makes sound? (a) a mixer grinder (b) a toaster (c) a room heater (d) a doorbell
38. 38.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
39. 39.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) in parallel (d) by Wi-Fi
40. 40.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is an insulator (c) to make them heavy (d) plastic is a conductor

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