Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 466 · 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 single current path” is true of a series circuit. (a) True (b) False
2. 2.🔘 A bulb and a cell are joined through 3 switches on 3 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
3. 3.🔍 Which is the odd one out? (a) a street light (b) a tube light (c) an LED lamp (d) a siren
4. 4.🔍 Which is the odd one out? (a) a wooden stick (b) an iron nail (c) a paper strip (d) a ceramic cup
5. 5.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 230 V (c) 0.5 V (d) 15 V
6. 6.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) one (d) two
7. 7.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the base (c) the glass (d) the switch
8. 8.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
9. 9.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
10. 10.💡 A battery lights 5 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
11. 11.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
12. 12.True or false: to fly a kite near wires is not safe. (a) False (b) True
13. 13.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
14. 14.Which drawing is the symbol for a motor? (a) a line lifted at a gap (b) a circle with V inside (c) two or more cell symbols (d) a circle with M inside
15. 15.🔋 What is a battery? (a) a kind of bulb (b) one single wire (c) two or more cells joined (d) a switch with a lid
16. 16.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) by Wi-Fi (c) in parallel (d) in series
17. 17.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity
18. 18.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
19. 19.🔦 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
20. 20.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
21. 21.True or false: to fly kites in open fields is not safe. (a) False (b) True
22. 22.⚡ What does an electric iron mainly change electricity into? (a) movement (b) heat (c) light (d) sound
23. 23.🔋 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)? =
24. 24.⚡ What does a water heater mainly change electricity into? (a) heat (b) light (c) movement (d) sound
25. 25.True or false: a mixer grinder mainly makes movement. (a) True (b) False
26. 26.What does a reed switch do? (a) slides side to side (b) closes near a magnet (c) stays where you flip it (d) flips up or down
27. 27.🔋 How many 1.5 V cells must be joined in series to give 7.5 V?
28. 28.🔘 A bulb and a cell are joined through 5 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
29. 29.True or false: a street light mainly gives out light. (a) True (b) False
30. 30.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
31. 31.True or false: if a wire is cut, the circuit is open and no current flows. (a) True (b) False
32. 32.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
33. 33.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
34. 34.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
35. 35.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
36. 36.⚡ What does a street light mainly change electricity into? (a) heat (b) movement (c) sound (d) light
37. 37.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
38. 38.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the plastic handle (d) the steel shaft
39. 39.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a reed switch (c) a toggle switch (d) a push button
40. 40.True or false: to use a cable with cuts is not safe. (a) False (b) True

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