Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 516 · 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: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
2. 2.Which drawing is the symbol for a diode? (a) triangle against a bar (b) a circle with a cross (c) a circle with A inside (d) triangle, bar and arrows
3. 3.💡 5 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
4. 4.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
5. 5.🔦 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 graphite rod. Does the bulb glow? (a) No (b) Yes
6. 6.True or false: if a wire is cut, the circuit is closed and current flows. (a) True (b) False
7. 7.True or false: a water heater mainly makes movement. (a) False (b) True
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) No (b) Yes
9. 9.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
10. 10.True or false: to use mains for a project is safe. (a) False (b) True
11. 11.Which of these is a conductor? (a) a plastic straw (b) a cotton thread (c) a copper wire (d) a ceramic cup
12. 12.🔍 Which is the odd one out? (a) a paper strip (b) an iron nail (c) aluminium foil (d) a copper wire
13. 13.Which of these gives us electricity? (a) a television (b) a mobile phone (c) a computer (d) a cell
14. 14.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
15. 15.💡 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 3 and 5 are taken out of their holders. How many bulbs glow?
16. 16.Which drawing is the symbol for a bulb? (a) a dot where wires meet (b) one tall, one short bar (c) a circle with an X in it (d) a small empty box
17. 17.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
18. 18.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) cell (c) ammeter (d) motor
19. 19.Which of these is not safe? (a) keep drinks far away (b) build with an adult near (c) stay away from pylons (d) open a phone charger
20. 20.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
21. 21.💡 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
22. 22.🔌 Most metals are good … (a) insulators (b) batteries (c) conductors (d) magnets only
23. 23.Which of these mainly makes movement? (a) an electric iron (b) a doorbell (c) a mixer grinder (d) an electric kettle
24. 24.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
25. 25.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
26. 26.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a tilt switch (c) a push button (d) a slide switch
27. 27.What does a push button do? (a) flips up or down (b) closes when tipped over (c) stays where you flip it (d) works only while pressed
28. 28.🔦 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 brass key. Does the bulb glow? (a) No (b) Yes
29. 29.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) capacitor (b) ammeter (c) junction (d) bulb
30. 30.True or false: an LED lamp mainly gives out light. (a) True (b) False
31. 31.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in parallel (c) not joined (d) in series
32. 32.True or false: if the switch is OFF, the circuit is closed and current flows. (a) True (b) False
33. 33.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) an insulator (c) a conductor (d) a cell
34. 34.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) No (b) Yes
35. 35.True or false: an electric kettle mainly gives out heat. (a) True (b) False
36. 36.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a reed switch (c) a push button (d) a toggle switch
37. 37.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
38. 38.True or false: a cotton thread is an insulator. (a) False (b) True
39. 39.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
40. 40.🔋 Does a generator give electricity or use electricity? (a) uses electricity (b) gives electricity

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids