Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 956 · 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 of these is safe? (a) use mains for a project (b) touch a switch when wet (c) fly a kite near wires (d) stop if a part gets hot
2. 2.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) cell (c) resistor (d) switch
3. 3.🔍 Which is the odd one out? (a) stop if a part gets hot (b) throw cells in a fire (c) open a phone charger (d) climb an electric pole
4. 4.🔋 What is a battery? (a) two or more cells joined (b) a switch with a lid (c) one single wire (d) a kind of bulb
5. 5.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
6. 6.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) False (b) True
7. 7.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
8. 8.True or false: to touch a switch when wet is not safe. (a) True (b) False
9. 9.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) Yes (b) No
11. 11.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) a magnet (c) friction (d) sound
12. 12.True or false: a dry cork is an insulator. (a) False (b) True
13. 13.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) dotted circles (c) little stars (d) straight lines
14. 14.🔍 Which is the odd one out? (a) keep drinks far away (b) use mains for a project (c) open a phone charger (d) poke things in a socket
15. 15.🔋 4 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
16. 16.True or false: to fly a kite near wires is not safe. (a) True (b) False
17. 17.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
18. 18.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
19. 19.What does a slide switch do? (a) closes near a magnet (b) slides side to side (c) stays where you flip it (d) closes when tipped over
20. 20.⚠️ Is it safe to stop if a part gets hot? (a) safe (b) not safe
21. 21.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
22. 22.True or false: to poke things in a socket is safe. (a) True (b) False
23. 23.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
24. 24.Which of these is a conductor? (a) a cotton thread (b) a copper wire (c) a glass marble (d) a wooden stick
25. 25.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a safety pin. Does the bulb glow? (a) No (b) Yes
26. 26.⚡ What does a water heater mainly change electricity into? (a) movement (b) sound (c) light (d) heat
27. 27.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
28. 28.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) capacitor (b) switch (c) bulb (d) voltmeter
29. 29.Which of these gives us electricity? (a) a computer (b) a solar panel (c) a television (d) a washing machine
30. 30.💡 6 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?
31. 31.💡 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
32. 32.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the switch (b) the filament (c) the base (d) the glass
33. 33.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a slide switch (c) a tilt switch (d) a push button
34. 34.💡 5 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 3 and 5 are taken out of their holders. How many bulbs glow?
35. 35.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
36. 36.True or false: an iron nail is a conductor. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a rubber band (c) a steel spoon (d) a ceramic cup
38. 38.🔍 Which is the odd one out? (a) a toaster (b) an electric toy car (c) a mixer grinder (d) a table fan
39. 39.🔍 Which is the odd one out? (a) a steel coin (b) a woollen thread (c) a rubber eraser (d) a paper strip
40. 40.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)

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