Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 976 · 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.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
2. 2.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
3. 3.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
4. 4.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) No (b) Yes
5. 5.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a single current path (d) one out, the rest glow
6. 6.Which of these is not safe? (a) dry your hands first (b) poke things in a socket (c) use small battery cells (d) stay away from pylons
7. 7.True or false: a woollen thread is a conductor. (a) True (b) False
8. 8.⚡ What does an electric iron mainly change electricity into? (a) light (b) heat (c) movement (d) sound
9. 9.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
10. 10.Which drawing is the symbol for a cell? (a) a line lifted at a gap (b) two equal parallel lines (c) one tall, one short bar (d) a circle with M inside
11. 11.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) little stars (d) wavy lines
12. 12.True or false: a circle with A inside is the symbol for a battery. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) keep drinks far away (b) touch a fallen wire (c) use mains for a project (d) use a cable with cuts
14. 14.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
15. 15.Which of these mainly gives out heat? (a) an electric drill (b) an electric toy car (c) a water heater (d) an LED lamp
16. 16.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) True (b) False
17. 17.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) chemical energy (b) light energy (c) sound energy (d) movement energy
18. 18.True or false: if the switch is ON, the circuit is closed and current flows. (a) True (b) False
19. 19.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
20. 20.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one (d) one for each bulb
21. 21.🔋 Does a television give electricity or use electricity? (a) gives electricity (b) uses electricity
22. 22.🔦 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
23. 23.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) sound energy (c) electrical energy (d) wind energy
24. 24.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a reed switch (c) a tilt switch (d) a push button
25. 25.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
26. 26.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
27. 27.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
28. 28.Which drawing is the symbol for a bulb? (a) a long and a short line (b) a circle with a cross (c) a circle with V inside (d) two equal parallel lines
29. 29.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
30. 30.True or false: “a single current path” is true of a series circuit. (a) True (b) False
31. 31.🔋 Does a mobile phone give electricity or use electricity? (a) gives electricity (b) uses electricity
32. 32.🔁 What must there be for a current to flow? (a) a plastic gap (b) a broken path (c) a complete loop (d) one loose end
33. 33.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
34. 34.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) False (b) True
35. 35.What does a reed switch do? (a) slides side to side (b) closes when tipped over (c) closes near a magnet (d) works only while pressed
36. 36.🔍 Which is the odd one out? (a) a buzzer (b) a siren (c) a tube light (d) a school bell
37. 37.🔋 What is a battery? (a) one single wire (b) a switch with a lid (c) a kind of bulb (d) two or more cells joined
38. 38.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
39. 39.Which of these is safe? (a) open a phone charger (b) use mains for a project (c) use small battery cells (d) poke things in a socket
40. 40.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series

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