Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 728 · 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.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
2. 2.Which drawing is the symbol for a motor? (a) a line lifted at a gap (b) a dot where wires meet (c) a circle with M inside (d) triangle against a bar
3. 3.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
4. 4.Which of these uses electricity? (a) a cell (b) a wind turbine (c) a battery (d) an air conditioner
5. 5.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) not joined (d) by Wi-Fi
6. 6.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) to make it colourful (c) quick and clear for all (d) to hide the circuit
7. 7.💡 5 identical bulbs are joined in series with a 12.5 V battery (ideal wires). How many volts does each bulb get? =
8. 8.🔍 Which is the odd one out? (a) a woollen thread (b) a safety pin (c) a metal paper clip (d) a brass key
9. 9.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a wooden stick. Does the bulb glow? (a) Yes (b) No
10. 10.⚡ What does an exhaust fan mainly change electricity into? (a) sound (b) movement (c) light (d) heat
11. 11.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
12. 12.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
13. 13.🔌 Is a plastic ruler a conductor or an insulator? (a) a conductor (b) an insulator
14. 14.Which of these means the circuit is closed? (a) a wire is cut (b) a wire has come loose (c) the loop is complete (d) the switch is OFF
15. 15.🔋 Does a wind turbine give electricity or use electricity? (a) uses electricity (b) gives electricity
16. 16.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a toggle switch (c) a slide switch (d) a tilt switch
17. 17.🔘 Which kind of switch stays where you flip it? (a) a tilt switch (b) a slide switch (c) a toggle switch (d) a push button
18. 18.True or false: a torch mainly makes movement. (a) True (b) False
19. 19.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
20. 20.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are ON (d) when both are OFF
21. 21.What does a toggle switch do? (a) springs back when let go (b) slides side to side (c) works only while pressed (d) stays where you flip it
22. 22.🔁 What must there be for a current to flow? (a) a plastic gap (b) a complete loop (c) one loose end (d) a broken path
23. 23.Which of these is safe? (a) use small battery cells (b) use mains for a project (c) throw cells in a fire (d) touch a fallen wire
24. 24.What does a push button do? (a) closes near a magnet (b) closes when tipped over (c) flips up or down (d) springs back when let go
25. 25.🔍 Which is the odd one out? (a) poke things in a socket (b) keep drinks far away (c) use small battery cells (d) stop if a part gets hot
26. 26.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
27. 27.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
28. 28.Which drawing is the symbol for a bulb? (a) a long and a short line (b) a line lifted at a gap (c) two equal parallel lines (d) a circle with an X in it
29. 29.Which of these is a conductor? (a) a woollen thread (b) a rubber band (c) a dry cork (d) aluminium foil
30. 30.🔋 4 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
31. 31.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 4 glow? (a) Yes (b) No
32. 32.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
33. 33.Which of these means the circuit is closed? (a) a wire is cut (b) a wire has come loose (c) the bulb is unscrewed (d) all wires are joined
34. 34.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
35. 35.⚠️ Is it safe to touch a switch when wet? (a) not safe (b) safe
36. 36.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
37. 37.True or false: a graphite rod is an insulator. (a) False (b) True
38. 38.🔘 Which kind of switch flips up or down? (a) a reed switch (b) a toggle switch (c) a tilt switch (d) a slide switch
39. 39.🔘 Which kind of switch slides side to side? (a) a tilt switch (b) a push button (c) a reed switch (d) a slide switch
40. 40.Which of these mainly makes sound? (a) an LED lamp (b) a tube light (c) an electric drill (d) a siren

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