While this editor is not aware of any special physical laws governing omelets, Ohm's Law can be applied to solve for voltage drop in batteries and dc power supplies. This article, Generating Negative Resistance, shows that the resistance in that equation is not required to be positive.
Are you positive you know how to answer the question posed in this article, Which Way Does Current Flow? If you're an electrical engineer you definitely know the answer to this, or at least you think you do. If you said positive to negative, you are wrong.
This more serious article, How to Kill a Transformer, reminds us that power transformers are not an off-the-shelf item. Most are custom made to match the utility’s system.
This is hard-nosed-and-yet-alarmingly-dangerous engineering at its finest. To learn The Essentials of AC Power Safety, read this article on grounding and insulation methods.
If you prefer soldering circuit boards to eating them, check out these 11 Myths About PCB Layout, in which we explain why the art of PCB layout is not as straightforward as one might think.
For something more serious, check out this article, Debugging at Home. Electronic Design editor William Wong talks about his experience debugging smart home devices:
If you prefer the take-no-prisoners ethos of strap sandals to the free-and-easy philosophy of flip flops, this article, Flip-Flop Design Provides Frame Sync for Received Satellite Telemetry, might be for you.
It describes how a string of D-flip flops configured as a counter can be used to establish the initial frame synchronization needed to decode satellite-telemetry data, which has been received and demodulated.