Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 973 · 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 not safe? (a) use a cable with cuts (b) dry your hands first (c) build with an adult near (d) take cells out after use
2. 2.💡 2 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) straight lines (c) little stars (d) wavy lines
4. 4.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
5. 5.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to hide the circuit (c) to make it colourful (d) symbols are heavier
6. 6.True or false: an electric iron mainly makes movement. (a) False (b) True
7. 7.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
8. 8.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
9. 9.🔍 Which is the odd one out? (a) touch a switch when wet (b) dry your hands first (c) take cells out after use (d) keep drinks far away
10. 10.🔍 Which is the odd one out? (a) an electric kettle (b) an electric iron (c) a toaster (d) a doorbell
11. 11.⚠️ Is it safe to use mains for a project? (a) not safe (b) safe
12. 12.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
13. 13.🔋 Does a television give electricity or use electricity? (a) gives electricity (b) uses electricity
14. 14.🔍 Which is the odd one out? (a) use mains for a project (b) poke things in a socket (c) take cells out after use (d) open a phone charger
15. 15.🔍 Which is the odd one out? (a) take cells out after use (b) build with an adult near (c) use small battery cells (d) fly a kite near wires
16. 16.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
17. 17.Which of these uses electricity? (a) a cell (b) a solar panel (c) a mobile phone (d) a battery
18. 18.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
19. 19.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
20. 20.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) to save copper only (d) each gets full voltage
21. 21.True or false: to build with an adult near is not safe. (a) True (b) False
22. 22.🔘 When a switch is ON, the circuit is … (a) closed (b) cut (c) broken (d) open
23. 23.Which of these means the circuit is closed? (a) a wire is cut (b) the loop is complete (c) a wire has come loose (d) the switch is OFF
24. 24.Which of these is an insulator? (a) aluminium foil (b) a graphite rod (c) a paper strip (d) a copper wire
25. 25.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
26. 26.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) dust particles (c) water drops (d) photons
27. 27.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
28. 28.⚡ What does a loudspeaker mainly change electricity into? (a) heat (b) sound (c) movement (d) light
29. 29.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) two or more cells joined (d) a switch with a lid
30. 30.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
31. 31.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) Yes (b) No
32. 32.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
33. 33.Which of these uses electricity? (a) a battery (b) a cell (c) a washing machine (d) a bicycle dynamo
34. 34.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
35. 35.💡 A battery lights 2 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
36. 36.🔁 What do we call a circuit with a break in it? (a) a series circuit (b) a full circuit (c) a closed circuit (d) an open circuit
37. 37.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
38. 38.🔋 A 3 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
39. 39.Which of these is not safe? (a) dry your hands first (b) touch a fallen wire (c) keep drinks far away (d) stop if a part gets hot
40. 40.Which of these is true of a series circuit? (a) a single current path (b) each gets the full volts (c) many paths for current (d) used in house wiring

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