Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 238 · 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.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) resistor (b) wire (c) switch (d) battery
2. 2.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
3. 3.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
4. 4.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. 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
5. 5.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) voltmeter (c) motor (d) cell
6. 6.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) switch (b) diode (c) bulb (d) voltmeter
7. 7.True or false: to build with an adult near is not safe. (a) False (b) True
8. 8.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
9. 9.⚡ What does a table fan mainly change electricity into? (a) movement (b) light (c) sound (d) heat
10. 10.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) photons (c) electrons (d) dust particles
11. 11.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) capacitor (b) switch (c) resistor (d) cell
12. 12.🔦 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
13. 13.True or false: a toggle switch slides side to side. (a) True (b) False
14. 14.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
15. 15.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they explode (d) they get dimmer
16. 16.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) resistor (b) ammeter (c) battery (d) diode
17. 17.True or false: to open a phone charger is not safe. (a) False (b) True
18. 18.What does a slide switch do? (a) works only while pressed (b) closes near a magnet (c) flips up or down (d) slides side to side
19. 19.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
20. 20.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
21. 21.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
22. 22.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a reed switch (c) a slide switch (d) a tilt switch
23. 23.🔍 Which is the odd one out? (a) a buzzer (b) a siren (c) a school bell (d) an electric toy car
24. 24.Which of these gives us electricity? (a) a refrigerator (b) a bicycle dynamo (c) a computer (d) a television
25. 25.💡 A battery lights 5 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
26. 26.🔌 Is an iron nail a conductor or an insulator? (a) an insulator (b) a conductor
27. 27.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a push button (c) a tilt switch (d) a toggle switch
28. 28.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
29. 29.True or false: a push button springs back when let go. (a) True (b) False
30. 30.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
31. 31.⚡ What does a loudspeaker mainly change electricity into? (a) light (b) movement (c) heat (d) sound
32. 32.Which drawing is the symbol for a bulb? (a) two or more cell symbols (b) one tall, one short bar (c) a circle with an X in it (d) triangle against a bar
33. 33.🔍 Which is the odd one out? (a) poke things in a socket (b) fly a kite near wires (c) throw cells in a fire (d) fly kites in open fields
34. 34.🔋 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
35. 35.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a rubber band. Does the bulb glow? (a) Yes (b) No
36. 36.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) a single current path (d) each gets the full volts
37. 37.🔋 6 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
38. 38.Which of these is safe? (a) touch a switch when wet (b) climb an electric pole (c) keep drinks far away (d) poke things in a socket
39. 39.Which of these mainly gives out heat? (a) a street light (b) a traffic signal (c) a toaster (d) a siren
40. 40.🔘 Which kind of switch works only while pressed? (a) a reed switch (b) a tilt switch (c) a toggle switch (d) a push button

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