Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 790 · 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: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
2. 2.Which of these mainly makes sound? (a) a night lamp (b) a siren (c) a mixer grinder (d) a traffic signal
3. 3.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the bare end (c) the steel shaft (d) the metal tip
4. 4.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) No (b) Yes
5. 5.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
6. 6.🔋 6 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
7. 7.True or false: a steel coin is a conductor. (a) True (b) False
8. 8.💡 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
9. 9.🔍 Which is the odd one out? (a) a rubber eraser (b) a copper wire (c) a plastic straw (d) a woollen thread
10. 10.🔍 Which is the odd one out? (a) a ceramic cup (b) a graphite rod (c) a paper strip (d) a plastic ruler
11. 11.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
12. 12.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) electric current (c) sound (d) friction
13. 13.🔍 Which is the odd one out? (a) stay away from pylons (b) dry your hands first (c) take cells out after use (d) climb an electric pole
14. 14.True or false: to climb an electric pole is safe. (a) False (b) True
15. 15.💡 In a series circuit, how many paths does the current have? (a) none (b) two (c) one for each bulb (d) one
16. 16.🔦 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 aluminium foil. Does the bulb glow? (a) No (b) Yes
17. 17.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
18. 18.🔋 How many 2 V cells must be joined in series to give 16 V?
19. 19.True or false: a cotton thread is a conductor. (a) False (b) True
20. 20.True or false: a push button stays where you flip it. (a) True (b) False
21. 21.True or false: a ceramic cup is a conductor. (a) False (b) True
22. 22.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
23. 23.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they get dimmer (d) they all go out
24. 24.🔦 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 graphite rod. Does the bulb glow? (a) Yes (b) No
25. 25.🔍 Which is the odd one out? (a) climb an electric pole (b) throw cells in a fire (c) touch a fallen wire (d) stay away from pylons
26. 26.True or false: a toaster mainly makes sound. (a) True (b) False
27. 27.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
28. 28.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
29. 29.💡 4 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
30. 30.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
31. 31.🔘 What does a switch do in a circuit? (a) makes electricity (b) opens or closes the loop (c) stores current (d) changes the voltage
32. 32.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
33. 33.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the filament (c) the glass (d) the switch
34. 34.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a cell (c) an insulator (d) a switch that is ON
35. 35.Which of these is an insulator? (a) a brass key (b) an iron nail (c) a steel spoon (d) a plastic ruler
36. 36.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
37. 37.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a toggle switch (c) a tilt switch (d) a reed switch
38. 38.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
39. 39.Which of these mainly gives out heat? (a) an electric kettle (b) a buzzer (c) a mixer grinder (d) an electric toy car
40. 40.🔋 What should you do with used-up cells? (a) bury them in soil (b) cut them open (c) give them for recycling (d) throw them in a fire

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