Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 686 · 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: a traffic signal mainly gives out heat. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) build with an adult near (b) use small battery cells (c) open a phone charger (d) stop if a part gets hot
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.🔍 Which is the odd one out? (a) use mains for a project (b) build with an adult near (c) stay away from pylons (d) stop if a part gets hot
5. 5.🔋 What is a battery? (a) one single wire (b) a switch with a lid (c) two or more cells joined (d) a kind of bulb
6. 6.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
7. 7.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a single current path (c) one out, the rest glow (d) bulbs share the voltage
8. 8.💡 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) brighter (c) the same
9. 9.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
10. 10.Which of these mainly makes movement? (a) a table fan (b) a torch (c) a water heater (d) a school bell
11. 11.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) a magnet (c) sound (d) electric current
12. 12.🔁 What must there be for a current to flow? (a) a broken path (b) a plastic gap (c) a complete loop (d) one loose end
13. 13.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
14. 14.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a push button
15. 15.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
16. 16.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
17. 17.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
18. 18.True or false: if a cell is taken out, the circuit is closed and current flows. (a) False (b) True
19. 19.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) one (c) two (d) none
20. 20.🔦 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
21. 21.🔋 What should you do with used-up cells? (a) give them for recycling (b) throw them in a fire (c) cut them open (d) bury them in soil
22. 22.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) ammeter (b) motor (c) battery (d) bulb
23. 23.🔍 Which is the odd one out? (a) touch a switch when wet (b) use mains for a project (c) use small battery cells (d) open a phone charger
24. 24.Which of these uses electricity? (a) a generator (b) a solar panel (c) a bicycle dynamo (d) a television
25. 25.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
26. 26.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
27. 27.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
28. 28.True or false: if all wires are joined, the circuit is open and no current flows. (a) True (b) False
29. 29.Which drawing is the symbol for a cell? (a) a small empty box (b) a circle with A inside (c) a long and a short line (d) a circle with an X in it
30. 30.⚡ What does an LED lamp mainly change electricity into? (a) movement (b) heat (c) sound (d) light
31. 31.💡 A battery lights 4 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
32. 32.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) a series circuit (d) an open circuit
33. 33.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) half the voltage (d) the same voltage
34. 34.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) the loop is complete (d) a wire has come loose
35. 35.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
36. 36.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No
37. 37.True or false: a water heater mainly gives out heat. (a) True (b) False
38. 38.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
39. 39.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a cell (c) a switch that is ON (d) an insulator
40. 40.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No

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