Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 740 · 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: “one out, the rest glow” is true of a series circuit. (a) True (b) False
2. 2.Which of these is a conductor? (a) a glass marble (b) a dry cork (c) a woollen thread (d) an iron nail
3. 3.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
4. 4.True or false: to fly kites in open fields is safe. (a) False (b) True
5. 5.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
6. 6.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
7. 7.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
8. 8.Which of these is true of a series circuit? (a) a single current path (b) own switch for each bulb (c) used in house wiring (d) one out, the rest glow
9. 9.💡 3 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
10. 10.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
11. 11.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
12. 12.🔌 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
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) neither line (d) the shorter line
14. 14.Which of these is safe? (a) dry your hands first (b) fly a kite near wires (c) open a phone charger (d) climb an electric pole
15. 15.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
16. 16.True or false: a tilt switch works only while pressed. (a) True (b) False
17. 17.True or false: a push button flips up or down. (a) False (b) True
18. 18.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) electric current (c) a magnet (d) sound
19. 19.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
20. 20.🔍 Which is the odd one out? (a) a cotton thread (b) a copper wire (c) a metal paper clip (d) a steel spoon
21. 21.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 12 V (c) 1.5 V (d) 230 V
22. 22.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) resistor (b) voltmeter (c) junction (d) cell
23. 23.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
24. 24.True or false: a woollen thread is an insulator. (a) True (b) False
25. 25.🔁 What must there be for a current to flow? (a) a broken path (b) a complete loop (c) one loose end (d) a plastic gap
26. 26.🔘 Which kind of switch closes when tipped over? (a) a tilt switch (b) a push button (c) a reed switch (d) a toggle switch
27. 27.⚡ What does a room heater mainly change electricity into? (a) sound (b) light (c) heat (d) movement
28. 28.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
29. 29.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) a break stops every bulb (d) one bulb out, all go out
30. 30.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is OFF, C is ON and D is ON. Does the bulb glow? (a) No (b) Yes
31. 31.Which of these is not safe? (a) touch a fallen wire (b) take cells out after use (c) dry your hands first (d) fly kites in open fields
32. 32.🔍 Which is the odd one out? (a) a rubber band (b) a safety pin (c) a ceramic cup (d) a paper strip
33. 33.💡 2 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
34. 34.True or false: a toggle switch stays where you flip it. (a) True (b) False
35. 35.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
36. 36.What does a reed switch do? (a) closes near a magnet (b) works only while pressed (c) flips up or down (d) closes when tipped over
37. 37.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) the same voltage (d) a bigger voltage
38. 38.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
39. 39.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
40. 40.Which of these is a conductor? (a) a glass marble (b) a plastic ruler (c) a metal paper clip (d) a wooden stick

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