Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 924 · 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 is the odd one out? (a) a plastic ruler (b) aluminium foil (c) an iron nail (d) a steel spoon
2. 2.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
3. 3.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) in parallel (d) by Wi-Fi
4. 4.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
5. 5.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
6. 6.True or false: a rubber eraser is a conductor. (a) True (b) False
7. 7.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) voltmeter (b) wire (c) capacitor (d) cell
8. 8.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
9. 9.What does a toggle switch do? (a) closes near a magnet (b) springs back when let go (c) stays where you flip it (d) closes when tipped over
10. 10.Which of these is an insulator? (a) a metal paper clip (b) a steel spoon (c) aluminium foil (d) a plastic straw
11. 11.Which of these means the circuit is open? (a) all wires are joined (b) the bulb is unscrewed (c) the switch is ON (d) the loop is complete
12. 12.True or false: to use small battery cells is safe. (a) False (b) True
13. 13.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a stranger online (c) a trusted adult (d) nobody
14. 14.True or false: “a single current path” is true of a series circuit. (a) True (b) False
15. 15.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
16. 16.True or false: if the loop is complete, the circuit is closed and current flows. (a) True (b) False
17. 17.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) voltmeter (b) resistor (c) capacitor (d) bulb
18. 18.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
19. 19.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) Yes (b) No
20. 20.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
21. 21.True or false: a tilt switch slides side to side. (a) True (b) False
22. 22.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) both of them (c) only one (d) it does not matter
23. 23.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
24. 24.True or false: if a wire is cut, the circuit is closed and current flows. (a) True (b) False
25. 25.💡 A battery lights 4 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
26. 26.🔘 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 ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
27. 27.🔋 Does a water pump give electricity or use electricity? (a) uses electricity (b) gives electricity
28. 28.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
29. 29.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
30. 30.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) straight lines (d) dotted circles
31. 31.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is an insulator (c) plastic is a conductor (d) plastic makes current
32. 32.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
33. 33.💡 4 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?
34. 34.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
35. 35.Which of these mainly gives out light? (a) a toaster (b) a siren (c) a school bell (d) a torch
36. 36.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) a single current path (d) used in house wiring
37. 37.🔋 How many 1.2 V cells must be joined in series to give 4.8 V?
38. 38.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) Yes (b) No
39. 39.🔍 Which is the odd one out? (a) use mains for a project (b) use small battery cells (c) take cells out after use (d) stop if a part gets hot
40. 40.🔘 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 ON. Does the bulb glow? (a) No (b) Yes

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