Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 345 · 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: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) an electric iron (b) a mixer grinder (c) an electric toy car (d) a table fan
3. 3.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
4. 4.🔍 Which is the odd one out? (a) use small battery cells (b) climb an electric pole (c) keep drinks far away (d) stop if a part gets hot
5. 5.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
6. 6.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
7. 7.True or false: to touch a fallen wire is safe. (a) False (b) True
8. 8.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
9. 9.🔋 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)? =
10. 10.True or false: a night lamp mainly makes movement. (a) True (b) False
11. 11.True or false: a tilt switch stays where you flip it. (a) True (b) False
12. 12.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) junction (b) wire (c) battery (d) ammeter
13. 13.Which of these is not safe? (a) climb an electric pole (b) take cells out after use (c) use small battery cells (d) dry your hands first
14. 14.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) half the voltage (c) double the voltage (d) the same voltage
15. 15.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) when either is ON (c) when both are ON (d) never
16. 16.Which of these is safe? (a) use a cable with cuts (b) throw cells in a fire (c) stop if a part gets hot (d) open a phone charger
17. 17.What does a toggle switch do? (a) flips up or down (b) slides side to side (c) closes near a magnet (d) springs back when let go
18. 18.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a cell (c) a switch that is ON (d) a conductor
19. 19.💡 In a series circuit, how many paths does the current have? (a) none (b) two (c) one for each bulb (d) one
20. 20.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 12 V (c) 230 V (d) 9 V
21. 21.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
22. 22.Which drawing is the symbol for a resistor? (a) many long-short pairs (b) a plain rectangle (c) a line lifted at a gap (d) a dot where wires meet
23. 23.🔋 How many 1.5 V cells must be joined in series to give 10.5 V?
24. 24.True or false: a copper wire is a conductor. (a) True (b) False
25. 25.⚡ What does a toaster mainly change electricity into? (a) movement (b) light (c) sound (d) heat
26. 26.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
27. 27.🔋 How many 3 V cells must be joined in series to give 9 V?
28. 28.True or false: a paper strip is an insulator. (a) False (b) True
29. 29.True or false: to take cells out after use is safe. (a) True (b) False
30. 30.True or false: aluminium foil is a conductor. (a) False (b) True
31. 31.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
32. 32.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they all go out (d) they get dimmer
33. 33.True or false: a ceramic cup is an insulator. (a) True (b) False
34. 34.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
35. 35.🔍 Which is the odd one out? (a) a room heater (b) a night lamp (c) a traffic signal (d) a tube light
36. 36.🔍 Which is the odd one out? (a) take cells out after use (b) stay away from pylons (c) touch a switch when wet (d) use small battery cells
37. 37.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
38. 38.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
39. 39.💡 4 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
40. 40.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =

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