Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 112 · 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: a toggle switch closes near a magnet. (a) False (b) True
2. 2.Which of these is true of a series circuit? (a) own switch for each bulb (b) one bulb out, all go out (c) each gets the full volts (d) many paths for current
3. 3.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
4. 4.💡 2 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
5. 5.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
6. 6.Which of these mainly gives out heat? (a) a street light (b) a torch (c) a water heater (d) a buzzer
7. 7.💡 A battery lights 5 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
8. 8.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 230 V (c) 1.5 V (d) 15 V
9. 9.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to make bulbs dim (d) to save copper only
10. 10.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
11. 11.Which of these mainly makes movement? (a) an electric kettle (b) a loudspeaker (c) a street light (d) a ceiling fan
12. 12.Which of these is an insulator? (a) a safety pin (b) a steel spoon (c) a dry cork (d) a graphite rod
13. 13.True or false: a ceramic cup is an insulator. (a) True (b) False
14. 14.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
15. 15.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) a switch with a lid (d) two or more cells joined
16. 16.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
17. 17.🔋 2 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
18. 18.True or false: to touch a switch when wet is safe. (a) False (b) True
19. 19.🔁 What must there be for a current to flow? (a) a broken path (b) a plastic gap (c) one loose end (d) a complete loop
20. 20.🔘 What does a switch do in a circuit? (a) makes electricity (b) changes the voltage (c) opens or closes the loop (d) stores current
21. 21.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) own switch for each bulb (d) many paths for current
22. 22.Which of these is safe? (a) throw cells in a fire (b) build with an adult near (c) open a phone charger (d) fly a kite near wires
23. 23.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
24. 24.True or false: an exhaust fan mainly makes movement. (a) False (b) True
25. 25.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a toggle switch (c) a slide switch (d) a reed switch
26. 26.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
27. 27.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
28. 28.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) stop if a part gets hot (b) keep drinks far away (c) use a cable with cuts (d) stay away from pylons
30. 30.What does a slide switch do? (a) flips up or down (b) stays where you flip it (c) closes near a magnet (d) slides side to side
31. 31.True or false: a toggle switch slides side to side. (a) True (b) False
32. 32.💡 2 identical bulbs are joined in series with an 8 V battery (ideal wires). How many volts does each bulb get? =
33. 33.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
34. 34.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
35. 35.🔘 Which kind of switch flips up or down? (a) a push button (b) a tilt switch (c) a slide switch (d) a toggle switch
36. 36.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) when both are OFF (c) when either is ON (d) never
37. 37.🔋 How many 2 V cells must be joined in series to give 4 V?
38. 38.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) diode (b) battery (c) cell (d) motor
39. 39.💡 A battery lights 4 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
40. 40.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) nuclear energy (c) wind energy (d) electrical energy

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