20 What do I do? Water got in my touchpad (and some apple juice), and it has dried out by now. Now when I try to left-click, it’s a right-click. Tapping still works. My mouse acts weirdly. That’s because water got in my touchpad. How can this be fixed?

21 What is a carbon resistor?

22 What is the difference between a current transformer and a voltage transformer in terms of output value?

23 Do I have a dead pixel on my new laptop?

24 Why do premium smartphones lack removable battery and expandable memory?

25 Since a 4 GHz CPU has been made to provide that super high frequency, is it possible to connect a properly lengthened antenna to it and radiate its 4 GHz oscillated current?

26 How did 5 V and 3.3 V become standard supply voltages?

27 How much does the flashlight on a smartphone cost?

28 What is the purpose of connecting a capacitor in series with another component?

29 Does Russia have modern computers?

30 What are the potential consequences of soldering a wire to the positive side of a battery?

31 Can you wire a capacitor backwards?

32 Why do ICs need bypass capacitors?

33 Which is better, Arduino or Raspberry Pi?

34 Why does a cheap knockoff brand power adapter-charger damage a MacBook even though it looks and feels identical?

35 What are some hidden circuits inside our common electronics (laptops, smartphones) that can enable additional functionality but are never used?

36 What were used to convert DC to AC before inverters?

37 I was playing around with some 10k resistors and I wanted to ask as I noticed something when I applied a voltage of 20v. Can I use resistors as rudimentary heating elements?

38 Is a clicking relay bad?

39 Why are HDMI cords so expensive?

40 Connecting the primary and secondary coil of a microwave transformer in other to achieve a step up/down transformer, what will happen?

41 If I bought a new phone sealed and left it 100 years in sealed condition, will it turn on?

42 What is one lesser-known electronic component that most hobbyists or students overlook, but professionals swear by?

43 Can low voltage damage a fan?

44 What are the parts of a coaxial cable? What function does each part serve?

45 Does a blinking LED use more power than a solid-lit LED?

46 Why does MOSFET operate in saturation to act as an amplifier?

47 What are some old electronics that if shown to people, most wouldn’t know what it is?

48 Why are 9-Volt batteries rectangular?

49 Why is a transistor called a current controlled device?

50 Can brushed motors run underwater?

51 When a device is waterproof, why is it specifically "for x minutes" and "at up to x feet"?

52 What are the typical scenarios where you would need a resistor capable of handling power as high as 100 Watts?

53 Could a computer with roughly the same specs as a late 1970s/1980s 8-bit microcomputer, including video and audio capability, be created out of discrete components (i.e., no microprocessors or integrated circuits)? If so, how small could it be made?

54 How does a dipole antenna work?

55 Do digital cameras lose picture quality over time?

56 How many transistors did a transistor radio typically contain?

57 In a foxhole radio, which part acts as a tuner, and which part act as a detector?

58 Is it necessary that every microprocessor must have 40 pins in the total number?

59 What was the greatest technical challenge for an electronics engineer in 1974 that is now almost trivial?

60 How can I make a 12V battery for starting a car with a supercapacitor?

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