Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 188 · 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.Which of these is true of a series circuit? (a) each gets the full volts (b) a break stops every bulb (c) many paths for current (d) own switch for each bulb
2. 2.Which of these mainly gives out light? (a) an electric toy car (b) a room heater (c) a table fan (d) a torch
3. 3.🔌 Most metals are good … (a) magnets only (b) insulators (c) batteries (d) conductors
4. 4.True or false: an electric kettle mainly gives out heat. (a) True (b) False
5. 5.🔁 What must there be for a current to flow? (a) a plastic gap (b) one loose end (c) a complete loop (d) a broken path
6. 6.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) photons (c) water drops (d) electrons
7. 7.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
8. 8.What does a push button do? (a) works only while pressed (b) slides side to side (c) closes near a magnet (d) stays where you flip it
9. 9.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
10. 10.🔍 Which is the odd one out? (a) stay away from pylons (b) use a cable with cuts (c) take cells out after use (d) fly kites in open fields
11. 11.🔋 What is a battery? (a) a switch with a lid (b) a kind of bulb (c) two or more cells joined (d) one single wire
12. 12.Which of these uses electricity? (a) a television (b) a cell (c) a battery (d) a solar panel
13. 13.🔍 Which is the odd one out? (a) a siren (b) an LED lamp (c) a tube light (d) a torch
14. 14.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) a magnet (c) electric current (d) sound
15. 15.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
16. 16.🔋 4 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
17. 17.True or false: a slide switch closes when tipped over. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a wooden stick (d) a brass key
19. 19.What does a slide switch do? (a) closes near a magnet (b) slides side to side (c) springs back when let go (d) works only while pressed
20. 20.True or false: to use a cable with cuts is safe. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) fly a kite near wires (b) touch a switch when wet (c) poke things in a socket (d) fly kites in open fields
22. 22.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
23. 23.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
24. 24.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) each gets the full volts
25. 25.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) light energy (c) movement energy (d) chemical energy
26. 26.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) No (b) Yes
27. 27.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
28. 28.🔋 Does a mobile phone give electricity or use electricity? (a) gives electricity (b) uses electricity
29. 29.Which of these is a conductor? (a) a woollen thread (b) a dry cork (c) a steel spoon (d) a wooden stick
30. 30.True or false: to stay away from pylons is not safe. (a) False (b) True
31. 31.Which of these uses electricity? (a) a power station (b) an air conditioner (c) a wind turbine (d) a bicycle dynamo
32. 32.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) bulb (b) diode (c) motor (d) wire
33. 33.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
34. 34.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
35. 35.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
36. 36.🔋 A 6 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
37. 37.🔍 Which is the odd one out? (a) dry your hands first (b) stay away from pylons (c) build with an adult near (d) use mains for a project
38. 38.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) chemical energy (c) wind energy (d) light energy
39. 39.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) all wires are joined (d) the switch is OFF
40. 40.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True

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