Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 675 · 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.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity
2. 2.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
3. 3.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) own switch for each bulb (d) one bulb out, all go out
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 OFF, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
5. 5.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
6. 6.Which of these gives us electricity? (a) a washing machine (b) a television (c) a cell (d) an air conditioner
7. 7.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
8. 8.Which drawing is the symbol for an ammeter? (a) two or more cell symbols (b) triangle, bar and arrows (c) a line lifted at a gap (d) a circle with A inside
9. 9.True or false: a tilt switch closes when tipped over. (a) False (b) True
10. 10.True or false: if a wire is cut, the circuit is open and no current flows. (a) False (b) True
11. 11.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) to make bulbs dim (d) each gets full voltage
12. 12.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
13. 13.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
14. 14.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
15. 15.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) motor (b) diode (c) junction (d) LED
16. 16.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
17. 17.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
18. 18.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
19. 19.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
20. 20.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a push button (c) a slide switch (d) a toggle switch
21. 21.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. Does bulb 3 glow? (a) Yes (b) No
22. 22.💡 4 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?
23. 23.True or false: a straight line is the symbol for a junction. (a) True (b) False
24. 24.What does a slide switch do? (a) slides side to side (b) springs back when let go (c) works only while pressed (d) closes when tipped over
25. 25.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
26. 26.True or false: a metal paper clip is a conductor. (a) True (b) False
27. 27.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to make it colourful (d) to hide the circuit
28. 28.🔋 3 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.True or false: an iron nail is an insulator. (a) True (b) False
30. 30.True or false: to fly kites in open fields is not safe. (a) True (b) False
31. 31.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No
32. 32.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
33. 33.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the plastic handle (c) the steel shaft (d) the bare end
34. 34.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
35. 35.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
36. 36.🔁 Is the circuit closed or open if a wire has come loose? (a) closed (b) open
37. 37.True or false: a plastic ruler is an insulator. (a) False (b) True
38. 38.Which of these is not safe? (a) fly a kite near wires (b) use small battery cells (c) dry your hands first (d) take cells out after use
39. 39.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
40. 40.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open

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