Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 654 · 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.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) capacitor (b) junction (c) motor (d) voltmeter
2. 2.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
3. 3.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
4. 4.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) a break stops every bulb (d) own switch for each bulb
5. 5.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
6. 6.🔌 Is a steel spoon a conductor or an insulator? (a) a conductor (b) an insulator
7. 7.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
8. 8.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
9. 9.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a cell (c) an insulator (d) a conductor
10. 10.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
11. 11.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
12. 12.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the longer line (d) the shorter line
13. 13.🔦 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) No (b) Yes
14. 14.Which of these is safe? (a) climb an electric pole (b) stop if a part gets hot (c) touch a fallen wire (d) open a phone charger
15. 15.🔍 Which is the odd one out? (a) a brass key (b) a metal paper clip (c) a graphite rod (d) a dry cork
16. 16.True or false: a water heater mainly gives out light. (a) True (b) False
17. 17.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
18. 18.Which of these gives us electricity? (a) a water pump (b) a television (c) a cell (d) a computer
19. 19.🔘 Which kind of switch flips up or down? (a) a push button (b) a tilt switch (c) a toggle switch (d) a reed switch
20. 20.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) cut (d) broken
21. 21.True or false: a brass key is an insulator. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) build with an adult near (b) use small battery cells (c) fly kites in open fields (d) touch a switch when wet
23. 23.🔍 Which is the odd one out? (a) touch a fallen wire (b) touch a switch when wet (c) use small battery cells (d) climb an electric pole
24. 24.True or false: to stay away from pylons is safe. (a) False (b) True
25. 25.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a rubber band. Does the bulb glow? (a) Yes (b) No
26. 26.Which of these is safe? (a) use mains for a project (b) fly a kite near wires (c) stay away from pylons (d) touch a switch when wet
27. 27.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
28. 28.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a graphite rod (b) a plastic ruler (c) aluminium foil (d) an iron nail
30. 30.🔌 Is a paper strip a conductor or an insulator? (a) a conductor (b) an insulator
31. 31.True or false: if the loop is complete, the circuit is closed and current flows. (a) False (b) True
32. 32.🔁 What must there be for a current to flow? (a) one loose end (b) a plastic gap (c) a complete loop (d) a broken path
33. 33.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
34. 34.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) by Wi-Fi (d) in series
35. 35.🔘 A bulb and a cell are joined through 5 switches on 5 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
36. 36.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 1.5 V (d) 0.5 V
37. 37.🔘 Which kind of switch springs back when let go? (a) a slide switch (b) a tilt switch (c) a toggle switch (d) a push button
38. 38.True or false: a buzzer mainly makes sound. (a) False (b) True
39. 39.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) when both are ON (c) when either is ON (d) never
40. 40.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the bare end (c) the plastic handle (d) the metal tip

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