Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 804 · 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.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
2. 2.🔋 Does a generator give electricity or use electricity? (a) uses electricity (b) gives electricity
3. 3.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a reed switch (c) a push button (d) a toggle switch
4. 4.Which of these means the circuit is closed? (a) the switch is ON (b) a wire is cut (c) the bulb is unscrewed (d) a wire has come loose
5. 5.True or false: a plastic straw is a conductor. (a) False (b) True
6. 6.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
7. 7.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) cut (d) broken
8. 8.Which of these is an insulator? (a) a graphite rod (b) aluminium foil (c) a cotton thread (d) a steel spoon
9. 9.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) many paths for current (d) bulbs share the voltage
10. 10.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) one bulb out, all go out (d) used in house wiring
11. 11.Which of these gives us electricity? (a) an air conditioner (b) a mobile phone (c) a solar panel (d) a television
12. 12.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
13. 13.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
14. 14.True or false: a toggle switch stays where you flip it. (a) False (b) True
15. 15.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) the loop is complete (c) a wire is cut (d) a wire has come loose
16. 16.Which of these uses electricity? (a) a bicycle dynamo (b) a solar panel (c) a wind turbine (d) a water pump
17. 17.True or false: to stop if a part gets hot is safe. (a) True (b) False
18. 18.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) a cell is taken out (d) all wires are joined
19. 19.⚡ What does an electric iron mainly change electricity into? (a) heat (b) light (c) sound (d) movement
20. 20.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) bulbs share the voltage (d) own switch for each bulb
21. 21.True or false: if a wire is cut, the circuit is closed and current flows. (a) True (b) False
22. 22.True or false: two equal parallel lines is the symbol for a motor. (a) True (b) False
23. 23.What does a reed switch do? (a) stays where you flip it (b) springs back when let go (c) closes near a magnet (d) flips up or down
24. 24.True or false: to use mains for a project is safe. (a) False (b) True
25. 25.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) by Wi-Fi (d) not joined
26. 26.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
27. 27.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to hide the circuit (d) to make it colourful
28. 28.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
29. 29.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
30. 30.💡 3 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. Bulbs 1 and 2 are taken out of their holders. Does bulb 3 glow? (a) Yes (b) No
31. 31.🔍 Which is the odd one out? (a) a rice cooker (b) a street light (c) a torch (d) an LED lamp
32. 32.Which of these uses electricity? (a) a battery (b) a generator (c) a power station (d) an air conditioner
33. 33.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a parallel circuit (c) a short circuit (d) a safe circuit
34. 34.🔋 What should you do with used-up cells? (a) give them for recycling (b) throw them in a fire (c) bury them in soil (d) cut them open
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) Yes (b) No
36. 36.True or false: a street light mainly gives out light. (a) True (b) False
37. 37.True or false: aluminium foil is an insulator. (a) True (b) False
38. 38.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) each gets the full volts (d) a single current path
39. 39.Which of these is a conductor? (a) a woollen thread (b) a plastic straw (c) a rubber band (d) a steel spoon
40. 40.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) switch (b) junction (c) capacitor (d) cell

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