So there's a powerline outside my bedroom window, and I thought, huh. Turns out I'm sleeping with my head in a 6mG AC magnetic field. Help me use physics to stop caring. [more inside]
What is "electric potential"? I've dug through the internet, gone to tutoring, asked my teacher, and nothing has helped. [more inside]
Explain alternating current distribution across "the grid" to me in terms an educated layman can understand. Specifically, I have a question about how to talk about which power plants are providing power to a particular consumer. [more inside]
Help me understand electricity and physics and how they apply to motors. I have my head around electricity basics and electromagnetism, but I have a few unanswered questions about the more subtle aspects. [more inside]
Lightning. Why does it always go to ground? [more inside]
Physics filter: The original fuse for an Ikea lighting system was rated for 6.3A and 250V. After a power surge, I noticed that the fuse had been toasted. Upon visiting 3 hardware stores, the best I could find was a similar fuse rated for 3.15A and 125V. Since V=I*R, it follows that the resistance is identical when the original fuse is compared with the replacement. Does this mean that these fuses are functionally equal?