Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 604 · 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.🔁 What do we call a circuit with a break in it? (a) an open circuit (b) a full circuit (c) a series circuit (d) a closed circuit
2. 2.True or false: a toaster mainly makes movement. (a) False (b) True
3. 3.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a tilt switch (c) a push button (d) a slide switch
4. 4.🔍 Which is the odd one out? (a) touch a switch when wet (b) build with an adult near (c) throw cells in a fire (d) poke things in a socket
5. 5.True or false: a safety pin is an insulator. (a) True (b) False
6. 6.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
7. 7.Which of these is an insulator? (a) a graphite rod (b) a cotton thread (c) a steel coin (d) aluminium foil
8. 8.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
9. 9.🔘 Which kind of switch slides side to side? (a) a push button (b) a toggle switch (c) a reed switch (d) a slide switch
10. 10.Which of these mainly gives out heat? (a) a mixer grinder (b) an electric iron (c) a table fan (d) an LED lamp
11. 11.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) all wires are joined (d) a cell is taken out
12. 12.Which drawing is the symbol for a cell? (a) a long and a short line (b) a line lifted at a gap (c) two equal parallel lines (d) a dot where wires meet
13. 13.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) wavy lines (c) little stars (d) straight lines
14. 14.Which of these is safe? (a) dry your hands first (b) touch a switch when wet (c) use mains for a project (d) use a cable with cuts
15. 15.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
16. 16.⚠️ Is it safe to use mains for a project? (a) not safe (b) safe
17. 17.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
18. 18.True or false: many long-short pairs is the symbol for a wire. (a) False (b) True
19. 19.🔌 Most metals are good … (a) magnets only (b) batteries (c) insulators (d) conductors
20. 20.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) the switch is OFF (d) the loop is complete
21. 21.⚡ What does a water heater mainly change electricity into? (a) light (b) movement (c) sound (d) heat
22. 22.True or false: a circle with a cross is the symbol for a bulb. (a) False (b) True
23. 23.🔋 How many 3 V cells must be joined in series to give 24 V?
24. 24.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
25. 25.⚠️ Is it safe to fly kites in open fields? (a) not safe (b) safe
26. 26.🔘 A bulb and a cell are joined through 6 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
27. 27.💡 In a series circuit, how many paths does the current have? (a) none (b) one (c) one for each bulb (d) two
28. 28.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
29. 29.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
30. 30.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a slide switch (c) a reed switch (d) a tilt switch
31. 31.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
32. 32.🔋 A 9 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
33. 33.True or false: if a wire is cut, the circuit is open and no current flows. (a) True (b) False
34. 34.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
35. 35.🔋 A 9 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
36. 36.🔋 Does a bicycle dynamo give electricity or use electricity? (a) uses electricity (b) gives electricity
37. 37.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
38. 38.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) plastic is an insulator (d) to make them heavy
39. 39.True or false: triangle, bar and arrows is the symbol for a junction. (a) False (b) True
40. 40.Which drawing is the symbol for an ammeter? (a) a circle with a cross (b) two equal parallel lines (c) a circle with A inside (d) a circle with V inside

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