Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 128 · 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 kind of switch closes when tipped over? (a) a toggle switch (b) a tilt switch (c) a slide switch (d) a push button
2. 2.🔋 What is a battery? (a) two or more cells joined (b) a switch with a lid (c) a kind of bulb (d) one single wire
3. 3.🔍 Which is the odd one out? (a) touch a switch when wet (b) poke things in a socket (c) fly kites in open fields (d) fly a kite near wires
4. 4.Which of these means the circuit is open? (a) the switch is OFF (b) the loop is complete (c) the switch is ON (d) all wires are joined
5. 5.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
6. 6.💡 6 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?
7. 7.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
8. 8.🔍 Which is the odd one out? (a) a paper strip (b) a copper wire (c) a graphite rod (d) a metal paper clip
9. 9.True or false: triangle, bar and arrows is the symbol for a capacitor. (a) False (b) True
10. 10.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
11. 11.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) symbols are heavier (c) to make it colourful (d) quick and clear for all
12. 12.Which drawing is the symbol for a motor? (a) triangle, bar and arrows (b) a circle with M inside (c) a dot where wires meet (d) two equal parallel lines
13. 13.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
14. 14.True or false: to use small battery cells is not safe. (a) False (b) True
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) wire (b) capacitor (c) switch (d) voltmeter
16. 16.🔦 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 copper wire. Does the bulb glow? (a) Yes (b) No
17. 17.Which of these is an insulator? (a) a dry cork (b) a safety pin (c) a graphite rod (d) an iron nail
18. 18.True or false: to stop if a part gets hot is not safe. (a) False (b) True
19. 19.💡 A battery lights 2 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.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) one loose end (d) a plastic gap
21. 21.💡 4 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
22. 22.💡 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. Bulb 1 is taken out of its holder. Does bulb 4 glow? (a) No (b) Yes
23. 23.Which of these mainly gives out light? (a) a traffic signal (b) a room heater (c) a rice cooker (d) an electric drill
24. 24.Which of these mainly gives out light? (a) a room heater (b) a mixer grinder (c) a loudspeaker (d) a torch
25. 25.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
26. 26.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
27. 27.True or false: if the bulb is unscrewed, the circuit is closed and current flows. (a) True (b) False
28. 28.Which of these mainly gives out heat? (a) a doorbell (b) a siren (c) a toaster (d) a night lamp
29. 29.What does a push button do? (a) flips up or down (b) closes when tipped over (c) slides side to side (d) works only while pressed
30. 30.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
31. 31.🔍 Which is the odd one out? (a) open a phone charger (b) take cells out after use (c) stay away from pylons (d) stop if a part gets hot
32. 32.💡 4 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. Bulb 1 is taken out of its holder. How many bulbs glow?
33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) Yes (b) No
34. 34.Which of these mainly gives out heat? (a) a traffic signal (b) a torch (c) a rice cooker (d) an exhaust fan
35. 35.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
36. 36.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
37. 37.⚡ A solar panel changes which kind of energy into electricity? (a) wind energy (b) light energy (c) chemical energy (d) sound energy
38. 38.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) broken (d) closed
39. 39.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) True (b) False
40. 40.True or false: a plastic straw is an insulator. (a) False (b) True

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