Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 130 · 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.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
2. 2.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a trusted adult (c) nobody (d) a stranger online
3. 3.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
4. 4.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
5. 5.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) quick and clear for all (c) symbols are heavier (d) to hide the circuit
6. 6.🔦 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
7. 7.Which of these is true of a parallel circuit? (a) many paths for current (b) a break stops every bulb (c) one bulb out, all go out (d) a single current path
8. 8.⚡ What does a night lamp mainly change electricity into? (a) movement (b) sound (c) light (d) heat
9. 9.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
10. 10.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a push button (c) a slide switch (d) a reed switch
11. 11.True or false: to keep drinks far away is not safe. (a) True (b) False
12. 12.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) bulbs share the voltage (d) own switch for each bulb
13. 13.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
14. 14.🔘 When a switch is ON, the circuit is … (a) closed (b) cut (c) open (d) broken
15. 15.Which drawing is the symbol for a battery? (a) two equal parallel lines (b) two or more cell symbols (c) a long and a short line (d) a small empty box
16. 16.⚡ What does a water heater mainly change electricity into? (a) light (b) sound (c) heat (d) movement
17. 17.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a slide switch (c) a push button (d) a tilt switch
18. 18.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
19. 19.True or false: a steel spoon is a conductor. (a) True (b) False
20. 20.🔋 6 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
21. 21.Which drawing is the symbol for a diode? (a) two equal parallel lines (b) a line lifted at a gap (c) a circle with a cross (d) triangle against a bar
22. 22.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
23. 23.True or false: many long-short pairs is the symbol for a capacitor. (a) True (b) False
24. 24.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) each gets full voltage (d) so all go off together
25. 25.True or false: a room heater mainly makes sound. (a) False (b) True
26. 26.💡 4 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
27. 27.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
28. 28.🔋 Does a generator give electricity or use electricity? (a) uses electricity (b) gives electricity
29. 29.True or false: a dry cork is an insulator. (a) True (b) False
30. 30.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) to make them heavy (c) plastic makes current (d) plastic is an insulator
31. 31.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a short circuit (c) a parallel circuit (d) a safe circuit
32. 32.🔍 Which is the odd one out? (a) a room heater (b) a school bell (c) an electric iron (d) a rice cooker
33. 33.⚡ What does an LED lamp mainly change electricity into? (a) heat (b) movement (c) sound (d) light
34. 34.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
35. 35.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) a break stops every bulb (d) a single current path
36. 36.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) double the voltage (c) no voltage (d) the same voltage
37. 37.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
38. 38.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
39. 39.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) voltmeter (b) battery (c) bulb (d) cell
40. 40.True or false: “many paths for current” is true of a series circuit. (a) True (b) False

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