Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 984 · 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 of these is true of a parallel circuit? (a) a single current path (b) bulbs share the voltage (c) a break stops every bulb (d) used in house wiring
2. 2.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
3. 3.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
4. 4.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) voltmeter (b) LED (c) ammeter (d) switch
5. 5.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
6. 6.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) to make them heavy (c) plastic is an insulator (d) plastic is a conductor
7. 7.Which of these gives us electricity? (a) a computer (b) a mobile phone (c) a generator (d) a television
8. 8.True or false: to fly a kite near wires is safe. (a) False (b) True
9. 9.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they keep glowing (d) they all go out
10. 10.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
11. 11.Which drawing is the symbol for a cell? (a) a long and a short line (b) a line lifted at a gap (c) a small empty box (d) triangle, bar and arrows
12. 12.Which of these uses electricity? (a) a mobile phone (b) a battery (c) a solar panel (d) a cell
13. 13.True or false: to fly kites in open fields is safe. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a siren (b) a tube light (c) a night lamp (d) a torch
15. 15.🔋 Does a generator give electricity or use electricity? (a) uses electricity (b) gives electricity
16. 16.True or false: a reed switch works only while pressed. (a) False (b) True
17. 17.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
18. 18.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
19. 19.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a conductor (c) an insulator (d) a switch that is ON
20. 20.💡 Why is house wiring done in parallel? (a) so all go off together (b) to make bulbs dim (c) each gets full voltage (d) to save copper only
21. 21.🔦 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
22. 22.🔍 Which is the odd one out? (a) a woollen thread (b) a brass key (c) a ceramic cup (d) a dry cork
23. 23.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
24. 24.What does a slide switch do? (a) slides side to side (b) works only while pressed (c) springs back when let go (d) stays where you flip it
25. 25.Which of these gives us electricity? (a) an air conditioner (b) a battery (c) a television (d) a computer
26. 26.🔍 Which is the odd one out? (a) a rubber band (b) a safety pin (c) a brass key (d) aluminium foil
27. 27.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) bulbs share the voltage (d) one bulb out, all go out
28. 28.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) No (b) Yes
29. 29.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
30. 30.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
31. 31.⚠️ Is it safe to take cells out after use? (a) safe (b) not safe
32. 32.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) battery (b) motor (c) bulb (d) diode
33. 33.What does a toggle switch do? (a) closes near a magnet (b) flips up or down (c) works only while pressed (d) closes when tipped over
34. 34.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) No (b) Yes
35. 35.Which of these uses electricity? (a) a solar panel (b) a television (c) a power station (d) a generator
36. 36.⚡ A cell changes stored chemical energy into which kind of energy? (a) wind energy (b) sound energy (c) electrical energy (d) nuclear energy
37. 37.Which drawing is the symbol for a voltmeter? (a) a plain rectangle (b) a circle with V inside (c) a small empty box (d) one tall, one short bar
38. 38.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
39. 39.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
40. 40.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)

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