Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 640 · 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 drawing is the symbol for a cell? (a) a line lifted at a gap (b) many long-short pairs (c) one tall, one short bar (d) a plain rectangle
2. 2.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in series (d) in parallel
3. 3.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
4. 4.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a slide switch
5. 5.🔋 Does a television give electricity or use electricity? (a) uses electricity (b) gives electricity
6. 6.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
7. 7.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
8. 8.Which of these is an insulator? (a) a metal paper clip (b) a safety pin (c) a rubber eraser (d) an iron nail
9. 9.Which drawing is the symbol for a voltmeter? (a) a circle with A inside (b) a circle with V inside (c) a small empty box (d) a circle with a cross
10. 10.🔍 Which is the odd one out? (a) a dry cork (b) a rubber band (c) a woollen thread (d) a steel spoon
11. 11.Which drawing is the symbol for an ammeter? (a) two or more cell symbols (b) a circle with A inside (c) a long and a short line (d) a circle with M inside
12. 12.💡 A battery lights 2 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
13. 13.Which of these is an insulator? (a) a metal paper clip (b) a ceramic cup (c) aluminium foil (d) a steel spoon
14. 14.True or false: aluminium foil is an insulator. (a) False (b) True
15. 15.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) sound energy (c) wind energy (d) electrical energy
16. 16.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
17. 17.🔋 What is a battery? (a) one single wire (b) two or more cells joined (c) a switch with a lid (d) a kind of bulb
18. 18.True or false: one tall, one short bar is the symbol for a switch. (a) False (b) True
19. 19.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a tilt switch (c) a slide switch (d) a push button
20. 20.True or false: a toggle switch flips up or down. (a) False (b) True
21. 21.Which drawing is the symbol for a resistor? (a) a small empty box (b) a line lifted at a gap (c) a long and a short line (d) a straight line
22. 22.Which of these mainly makes movement? (a) an electric iron (b) a toaster (c) a torch (d) an exhaust fan
23. 23.True or false: a line lifted at a gap is the symbol for a switch. (a) True (b) False
24. 24.Which of these uses electricity? (a) a generator (b) a cell (c) a power station (d) a computer
25. 25.🔦 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
26. 26.🔍 Which is the odd one out? (a) a buzzer (b) an electric drill (c) an exhaust fan (d) a table fan
27. 27.⚡ What does a street light mainly change electricity into? (a) sound (b) movement (c) heat (d) light
28. 28.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
29. 29.True or false: a street light mainly gives out light. (a) False (b) True
30. 30.True or false: to stay away from pylons is not safe. (a) True (b) False
31. 31.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) a single current path (c) a break stops every bulb (d) bulbs share the voltage
32. 32.🔍 Which is the odd one out? (a) an iron nail (b) a wooden stick (c) a woollen thread (d) a plastic straw
33. 33.True or false: a brass key is a conductor. (a) False (b) True
34. 34.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
35. 35.Which of these is not safe? (a) stop if a part gets hot (b) touch a switch when wet (c) use small battery cells (d) keep drinks far away
36. 36.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) light energy (c) chemical energy (d) wind energy
37. 37.True or false: if a wire has come loose, the circuit is open and no current flows. (a) False (b) True
38. 38.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a rubber band. Does the bulb glow? (a) No (b) Yes
39. 39.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
40. 40.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)

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