Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 872 · 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 a conductor? (a) a dry cork (b) a steel spoon (c) a woollen thread (d) a rubber band
2. 2.Which of these is true of a series circuit? (a) bulbs share the voltage (b) each gets the full volts (c) own switch for each bulb (d) one out, the rest glow
3. 3.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a reed switch (c) a push button (d) a toggle switch
4. 4.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) wait and watch (c) pour water on them (d) pull them by the hand
5. 5.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
6. 6.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) resistor (b) LED (c) wire (d) bulb
7. 7.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) to make them heavy (c) plastic is a conductor (d) plastic is an insulator
8. 8.Which of these uses electricity? (a) a wind turbine (b) a bicycle dynamo (c) a computer (d) a power station
9. 9.⚠️ Is it safe to use mains for a project? (a) safe (b) not safe
10. 10.Which of these means the circuit is closed? (a) a wire is cut (b) a wire has come loose (c) the loop is complete (d) the switch is OFF
11. 11.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a switch that is ON (c) a conductor (d) a cell
12. 12.🔋 Does a bicycle dynamo give electricity or use electricity? (a) uses electricity (b) gives electricity
13. 13.🔍 Which is the odd one out? (a) a ceiling fan (b) an electric toy car (c) a street light (d) a mixer grinder
14. 14.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
15. 15.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
16. 16.🔍 Which is the odd one out? (a) use mains for a project (b) throw cells in a fire (c) use small battery cells (d) use a cable with cuts
17. 17.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a safety pin. Does the bulb glow? (a) Yes (b) No
18. 18.Which drawing is the symbol for a battery? (a) a small empty box (b) two or more cell symbols (c) a plain rectangle (d) triangle against a bar
19. 19.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in parallel (c) in series (d) not joined
20. 20.True or false: a toggle switch closes when tipped over. (a) False (b) True
21. 21.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
22. 22.True or false: a torch mainly gives out light. (a) False (b) True
23. 23.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
24. 24.True or false: to stay away from pylons is safe. (a) False (b) True
25. 25.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a push button (c) a slide switch (d) a reed switch
26. 26.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a copper wire. Does the bulb glow? (a) No (b) Yes
27. 27.🔍 Which is the odd one out? (a) a torch (b) a tube light (c) a traffic signal (d) an electric kettle
28. 28.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
29. 29.🔦 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
30. 30.🔍 Which is the odd one out? (a) a wooden stick (b) a graphite rod (c) a plastic ruler (d) a ceramic cup
31. 31.🔍 Which is the odd one out? (a) a cotton thread (b) a copper wire (c) a graphite rod (d) a brass key
32. 32.🔘 A bulb and a cell are joined through 5 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
33. 33.🔍 Which is the odd one out? (a) use mains for a project (b) dry your hands first (c) fly kites in open fields (d) keep drinks far away
34. 34.🔌 Most metals are good … (a) magnets only (b) insulators (c) batteries (d) conductors
35. 35.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) junction (b) bulb (c) voltmeter (d) cell
36. 36.Which of these is a conductor? (a) a cotton thread (b) aluminium foil (c) a paper strip (d) a wooden stick
37. 37.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
38. 38.🔋 7 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)? =
39. 39.🔍 Which is the odd one out? (a) touch a switch when wet (b) take cells out after use (c) use mains for a project (d) use a cable with cuts
40. 40.🔌 Which metal is used for most electric wires at home? (a) rubber (b) plastic (c) glass (d) copper

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