Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 299 · 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: “one out, the rest glow”? (a) parallel (b) series
2. 2.🔘 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 ON and C is OFF. Does the bulb glow? (a) Yes (b) No
3. 3.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) junction (b) battery (c) wire (d) LED
4. 4.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
5. 5.⚡ What does a night lamp mainly change electricity into? (a) movement (b) heat (c) sound (d) light
6. 6.🔋 What is a battery? (a) one single wire (b) a switch with a lid (c) two or more cells joined (d) a kind of bulb
7. 7.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
8. 8.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
9. 9.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) each gets the full volts (d) a break stops every bulb
10. 10.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
11. 11.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
12. 12.Which of these uses electricity? (a) a computer (b) a solar panel (c) a battery (d) a power station
13. 13.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) two (d) one
14. 14.🔘 What does a switch do in a circuit? (a) stores current (b) changes the voltage (c) makes electricity (d) opens or closes the loop
15. 15.🔍 Which is the odd one out? (a) a siren (b) a room heater (c) a school bell (d) a loudspeaker
16. 16.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) in parallel (d) by Wi-Fi
17. 17.True or false: a metal paper clip is a conductor. (a) False (b) True
18. 18.Which of these means the circuit is closed? (a) a wire is cut (b) a wire has come loose (c) all wires are joined (d) the bulb is unscrewed
19. 19.Which of these mainly makes sound? (a) an electric kettle (b) a torch (c) an electric iron (d) a doorbell
20. 20.🔘 Which kind of switch works only while pressed? (a) a push button (b) a reed switch (c) a slide switch (d) a tilt switch
21. 21.🔦 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
22. 22.🔋 7 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
23. 23.💡 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. All the bulbs are in place. How many bulbs glow?
24. 24.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?
25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) No (b) Yes
26. 26.What does a push button do? (a) stays where you flip it (b) springs back when let go (c) closes near a magnet (d) flips up or down
27. 27.Which of these mainly makes sound? (a) a table fan (b) a torch (c) an exhaust fan (d) a siren
28. 28.💡 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) brighter (c) the same
29. 29.🔋 What should you do with used-up cells? (a) cut them open (b) give them for recycling (c) bury them in soil (d) throw them in a fire
30. 30.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the steel shaft (c) the plastic handle (d) the metal tip
31. 31.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
32. 32.Which drawing is the symbol for a cell? (a) a circle with M inside (b) a straight line (c) one tall, one short bar (d) a circle with a cross
33. 33.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
34. 34.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a reed switch (c) a push button (d) a toggle switch
35. 35.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) switch (b) diode (c) bulb (d) junction
36. 36.True or false: if a cell is taken out, the circuit is open and no current flows. (a) False (b) True
37. 37.⚡ What does a torch mainly change electricity into? (a) light (b) movement (c) heat (d) sound
38. 38.What does a tilt switch do? (a) stays where you flip it (b) closes when tipped over (c) flips up or down (d) slides side to side
39. 39.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) own switch for each bulb (d) bulbs share the voltage
40. 40.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a reed switch (c) a push button (d) a slide switch

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