Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 15 · 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.⚠️ Is it safe to stay away from pylons? (a) not safe (b) safe
2. 2.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
3. 3.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) wait and watch (c) shout for an adult (d) pour water on them
4. 4.True or false: an electric drill mainly makes sound. (a) False (b) True
5. 5.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) a series circuit (d) an open circuit
6. 6.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
7. 7.True or false: a tube light mainly gives out heat. (a) False (b) True
8. 8.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
9. 9.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) cut (d) broken
10. 10.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a plastic gap (d) a complete loop
11. 11.Which of these uses electricity? (a) a computer (b) a wind turbine (c) a generator (d) a cell
12. 12.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
13. 13.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) straight lines (d) wavy lines
14. 14.Which of these is safe? (a) dry your hands first (b) touch a switch when wet (c) climb an electric pole (d) poke things in a socket
15. 15.Which of these mainly makes movement? (a) a doorbell (b) an exhaust fan (c) a siren (d) an electric kettle
16. 16.True or false: a toggle switch stays where you flip it. (a) True (b) False
17. 17.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the filament (c) the switch (d) the glass
18. 18.True or false: a steel coin is an insulator. (a) False (b) True
19. 19.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
20. 20.🔋 7 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)? =
21. 21.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to hide the circuit (d) to make it colourful
22. 22.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
23. 23.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
24. 24.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
25. 25.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
26. 26.True or false: a tilt switch closes when tipped over. (a) True (b) False
27. 27.Which drawing is the symbol for a cell? (a) two or more cell symbols (b) one tall, one short bar (c) a circle with M inside (d) a straight line
28. 28.Which of these gives us electricity? (a) an air conditioner (b) a water pump (c) a generator (d) a computer
29. 29.True or false: “a single current path” is true of a series circuit. (a) True (b) False
30. 30.💡 4 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?
31. 31.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
32. 32.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
33. 33.True or false: a tilt switch springs back when let go. (a) True (b) False
34. 34.True or false: to use small battery cells is not safe. (a) True (b) False
35. 35.💡 A battery lights 4 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
36. 36.🔌 Which metal is used for most electric wires at home? (a) plastic (b) copper (c) glass (d) rubber
37. 37.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
38. 38.Which drawing is the symbol for a cell? (a) a circle with an X in it (b) a small empty box (c) a long and a short line (d) a straight line
39. 39.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
40. 40.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter

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