Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 832 · 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.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a wooden stick (b) a steel spoon (c) a copper wire (d) a steel coin
3. 3.🔋 What is a battery? (a) one single wire (b) a kind of bulb (c) a switch with a lid (d) two or more cells joined
4. 4.True or false: a street light mainly gives out light. (a) False (b) True
5. 5.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
6. 6.⚠️ Why must we never touch switches with wet hands? (a) water carries current (b) it spoils the paint (c) it is just untidy (d) water makes it cold
7. 7.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) a break stops every bulb (d) own switch for each bulb
8. 8.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
9. 9.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the shorter line (d) the longer line
10. 10.🔋 3 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
11. 11.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
12. 12.Which of these is true of a series circuit? (a) a single current path (b) many paths for current (c) one out, the rest glow (d) own switch for each bulb
13. 13.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
14. 14.Which of these is a conductor? (a) a glass marble (b) a paper strip (c) a plastic ruler (d) a copper wire
15. 15.🔦 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) No (b) Yes
16. 16.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) No (b) Yes
17. 17.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
18. 18.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
19. 19.Which of these mainly gives out heat? (a) a tube light (b) a street light (c) an electric kettle (d) a torch
20. 20.Which of these is not safe? (a) stop if a part gets hot (b) stay away from pylons (c) fly kites in open fields (d) poke things in a socket
21. 21.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
22. 22.Which drawing is the symbol for a wire? (a) a line lifted at a gap (b) many long-short pairs (c) a straight line (d) a circle with V inside
23. 23.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
24. 24.True or false: “a single current path” is true of a series circuit. (a) False (b) True
25. 25.💡 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) brighter (c) dimmer
26. 26.🔘 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
27. 27.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
28. 28.🔋 6 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)? =
29. 29.Which drawing is the symbol for a switch? (a) triangle, bar and arrows (b) a circle with a cross (c) a circle with M inside (d) a line lifted at a gap
30. 30.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) the switch is OFF (d) the loop is complete
31. 31.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
32. 32.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
33. 33.True or false: if a cell is taken out, the circuit is open and no current flows. (a) True (b) False
34. 34.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) dotted circles (d) little stars
35. 35.True or false: a push button slides side to side. (a) True (b) False
36. 36.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to save copper only (c) so all go off together (d) to make bulbs dim
37. 37.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) in series (d) not joined
38. 38.True or false: a dot where wires meet is the symbol for a voltmeter. (a) True (b) False
39. 39.Which drawing is the symbol for a bulb? (a) triangle against a bar (b) a line lifted at a gap (c) a small empty box (d) a circle with an X in it
40. 40.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. Does bulb 3 glow? (a) No (b) Yes

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