Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 983 · 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.Which of these uses electricity? (a) a cell (b) a power station (c) a mobile phone (d) a battery
2. 2.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
3. 3.🔍 Which is the odd one out? (a) a buzzer (b) a rice cooker (c) a loudspeaker (d) a school bell
4. 4.🔘 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 ON, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
5. 5.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
6. 6.🔍 Which is the odd one out? (a) touch a switch when wet (b) poke things in a socket (c) take cells out after use (d) open a phone charger
7. 7.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the base (c) the switch (d) the glass
8. 8.Which of these uses electricity? (a) a solar panel (b) a television (c) a bicycle dynamo (d) a battery
9. 9.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
10. 10.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
11. 11.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 3 glow? (a) Yes (b) No
12. 12.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a parallel circuit (b) a safe circuit (c) an open circuit (d) a short circuit
13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) Yes (b) No
14. 14.True or false: a dry cork is a conductor. (a) False (b) True
15. 15.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
16. 16.True or false: a long and a short line is the symbol for a motor. (a) True (b) False
17. 17.🔘 Which kind of switch stays where you flip it? (a) a reed switch (b) a slide switch (c) a push button (d) a toggle switch
18. 18.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
19. 19.True or false: to stay away from pylons is safe. (a) False (b) True
20. 20.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
21. 21.⚡ What does a street light mainly change electricity into? (a) light (b) movement (c) sound (d) heat
22. 22.Which of these is true of a series circuit? (a) used in house wiring (b) one bulb out, all go out (c) each gets the full volts (d) own switch for each bulb
23. 23.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
24. 24.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
25. 25.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
26. 26.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
27. 27.True or false: a traffic signal mainly gives out light. (a) True (b) False
28. 28.🔌 Is a wooden stick a conductor or an insulator? (a) an insulator (b) a conductor
29. 29.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
30. 30.🔘 What does a switch do in a circuit? (a) opens or closes the loop (b) changes the voltage (c) makes electricity (d) stores current
31. 31.🔍 Which is the odd one out? (a) dry your hands first (b) use small battery cells (c) stay away from pylons (d) open a phone charger
32. 32.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
33. 33.💡 A battery lights 5 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
34. 34.💡 A battery lights 3 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
35. 35.🔋 5 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
36. 36.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) closed (d) broken
37. 37.True or false: an exhaust fan mainly makes movement. (a) False (b) True
38. 38.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
39. 39.Which of these is a conductor? (a) a plastic ruler (b) a brass key (c) a cotton thread (d) a glass marble
40. 40.🔋 5 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =

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