Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 670 · 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 straight line? (a) diode (b) wire (c) battery (d) motor
2. 2.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. How many bulbs glow?
3. 3.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
4. 4.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
5. 5.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
6. 6.Which of these is safe? (a) use a cable with cuts (b) poke things in a socket (c) use mains for a project (d) use small battery cells
7. 7.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is OFF, C is ON and D is ON. Does the bulb glow? (a) No (b) Yes
8. 8.True or false: two equal parallel lines is the symbol for a capacitor. (a) False (b) True
9. 9.Which of these is true of a series circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) many paths for current (d) each gets the full volts
10. 10.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) a break stops every bulb (d) bulbs share the voltage
11. 11.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are OFF (d) when both are ON
12. 12.Which drawing is the symbol for a voltmeter? (a) many long-short pairs (b) two or more cell symbols (c) a circle with a cross (d) a circle with V inside
13. 13.True or false: to throw cells in a fire is not safe. (a) True (b) False
14. 14.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
15. 15.💡 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?
16. 16.🔦 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
17. 17.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
18. 18.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
19. 19.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
20. 20.🔘 Which kind of switch closes near a magnet? (a) a slide switch (b) a push button (c) a reed switch (d) a toggle switch
21. 21.💡 3 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
22. 22.What does a toggle switch do? (a) closes when tipped over (b) works only while pressed (c) flips up or down (d) springs back when let go
23. 23.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
24. 24.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a bigger voltage (c) a smaller voltage (d) the same voltage
25. 25.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) electrons (c) dust particles (d) water drops
26. 26.What does a push button do? (a) closes when tipped over (b) flips up or down (c) closes near a magnet (d) springs back when let go
27. 27.True or false: a plastic straw is a conductor. (a) True (b) False
28. 28.⚠️ Is it safe to touch a switch when wet? (a) safe (b) not safe
29. 29.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) the longer line (d) neither line
30. 30.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
31. 31.True or false: a street light mainly gives out light. (a) True (b) False
32. 32.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to save copper only (c) so all go off together (d) to make bulbs dim
33. 33.🔋 A 12 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
34. 34.True or false: to poke things in a socket is safe. (a) False (b) True
35. 35.💡 6 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 4 and 5 are taken out of their holders. How many bulbs glow?
36. 36.🔍 Which is the odd one out? (a) a traffic signal (b) a night lamp (c) a rice cooker (d) a torch
37. 37.Which of these mainly makes sound? (a) a traffic signal (b) a doorbell (c) an LED lamp (d) a rice cooker
38. 38.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
39. 39.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
40. 40.True or false: to take cells out after use is safe. (a) True (b) False

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