Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 409 · 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.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
2. 2.True or false: a circle with A inside is the symbol for a junction. (a) True (b) False
3. 3.🔘 What does a switch do in a circuit? (a) stores current (b) opens or closes the loop (c) makes electricity (d) changes the voltage
4. 4.🔁 Is the circuit closed or open if a cell is taken out? (a) open (b) closed
5. 5.Which of these gives us electricity? (a) a power station (b) a water pump (c) a television (d) an air conditioner
6. 6.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
7. 7.Which of these uses electricity? (a) a generator (b) a solar panel (c) a water pump (d) a cell
8. 8.True or false: if a wire is cut, the circuit is open and no current flows. (a) False (b) True
9. 9.True or false: an electric iron mainly gives out light. (a) True (b) False
10. 10.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) photons (c) water drops (d) electrons
11. 11.What does a push button do? (a) closes when tipped over (b) closes near a magnet (c) springs back when let go (d) stays where you flip it
12. 12.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
13. 13.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) all wires are joined (d) the bulb is unscrewed
14. 14.⚠️ Why must we never touch switches with wet hands? (a) water carries current (b) water makes it cold (c) it is just untidy (d) it spoils the paint
15. 15.🔦 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 dry cork. Does the bulb glow? (a) Yes (b) No
16. 16.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) a long and a short line (c) a circle with an X in it (d) a line lifted at a gap
17. 17.🔌 Most metals are good … (a) insulators (b) conductors (c) magnets only (d) batteries
18. 18.💡 2 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
19. 19.Which of these is safe? (a) open a phone charger (b) keep drinks far away (c) use mains for a project (d) climb an electric pole
20. 20.Which of these is not safe? (a) stay away from pylons (b) open a phone charger (c) dry your hands first (d) use small battery cells
21. 21.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
22. 22.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
23. 23.Which of these mainly makes sound? (a) an exhaust fan (b) a water heater (c) a toaster (d) a loudspeaker
24. 24.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
25. 25.🔋 5 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
26. 26.True or false: to fly kites in open fields is not safe. (a) True (b) False
27. 27.True or false: if a wire has come loose, the circuit is open and no current flows. (a) True (b) False
28. 28.💡 3 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
29. 29.True or false: a toggle switch stays where you flip it. (a) True (b) False
30. 30.Which of these is a conductor? (a) a woollen thread (b) a plastic ruler (c) a ceramic cup (d) a brass key
31. 31.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
32. 32.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
33. 33.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
34. 34.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
35. 35.🔘 Which kind of switch springs back when let go? (a) a reed switch (b) a push button (c) a toggle switch (d) a tilt switch
36. 36.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is ON, B is ON, C is OFF and D is ON. Does the bulb glow? (a) No (b) Yes
37. 37.🔦 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
38. 38.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
39. 39.Which of these is not safe? (a) keep drinks far away (b) touch a fallen wire (c) build with an adult near (d) dry your hands first
40. 40.True or false: a small empty box is the symbol for an LED. (a) True (b) False

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids