Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 745 · 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 slides side to side? (a) a push button (b) a slide switch (c) a tilt switch (d) a reed switch
2. 2.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) wind energy (c) light energy (d) chemical energy
3. 3.💡 5 identical bulbs are joined in series with a 10 V battery (ideal wires). How many volts does each bulb get? =
4. 4.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) resistor (c) cell (d) diode
5. 5.True or false: a straight line is the symbol for a diode. (a) False (b) True
6. 6.True or false: a buzzer mainly gives out light. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) an electric toy car (b) a mixer grinder (c) a buzzer (d) a ceiling fan
8. 8.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
9. 9.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
10. 10.🔋 A 9 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
11. 11.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) cut them open (d) bury them in soil
12. 12.💡 Why is house wiring done in parallel? (a) to save copper only (b) so all go off together (c) to make bulbs dim (d) each gets full voltage
13. 13.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
14. 14.🔘 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
15. 15.True or false: a copper wire is an insulator. (a) False (b) True
16. 16.🔋 A 12 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
17. 17.🔦 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) No (b) Yes
18. 18.True or false: a brass key is a conductor. (a) True (b) False
19. 19.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is OFF. Does the bulb glow? (a) No (b) Yes
20. 20.⚡ What does a night lamp mainly change electricity into? (a) heat (b) light (c) movement (d) sound
21. 21.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
22. 22.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a reed switch (c) a tilt switch (d) a toggle switch
23. 23.🔋 How many 2 V cells must be joined in series to give 4 V?
24. 24.Which of these mainly makes movement? (a) a torch (b) a siren (c) an electric toy car (d) a street light
25. 25.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
26. 26.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
27. 27.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
28. 28.🔋 Does a mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
29. 29.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
30. 30.Which drawing is the symbol for a resistor? (a) one tall, one short bar (b) a circle with V inside (c) a small empty box (d) two or more cell symbols
31. 31.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
32. 32.🔍 Which is the odd one out? (a) touch a switch when wet (b) throw cells in a fire (c) climb an electric pole (d) take cells out after use
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a copper wire (c) an iron nail (d) a steel spoon
34. 34.🔌 Is a steel coin a conductor or an insulator? (a) a conductor (b) an insulator
35. 35.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) open (b) closed
36. 36.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
37. 37.What does a reed switch do? (a) springs back when let go (b) works only while pressed (c) closes when tipped over (d) closes near a magnet
38. 38.🔋 A 6 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
39. 39.💡 2 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
40. 40.🔘 When a switch is ON, the circuit is … (a) cut (b) broken (c) open (d) closed

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