Breaking News
Why Dual Engine Failure Changes Everything -- Louisville Crash Update
Transforming Storage Shelf / Workbench - Small Space Organization
Our 3-Step Strategy for a Stress-Free Pantry
BEHIND THE DEEP STATE | The War on Farms
Top Tech News
HUGE 32kWh LiFePO4 DIY Battery w/ 628Ah Cells! 90 Minute Build
What Has Bitcoin Become 17 Years After Satoshi Nakamoto Published The Whitepaper?
Japan just injected artificial blood into a human. No blood type needed. No refrigeration.
The 6 Best LLM Tools To Run Models Locally
Testing My First Sodium-Ion Solar Battery
A man once paralyzed from the waist down now stands on his own, not with machines or wires,...
Review: Thumb-sized thermal camera turns your phone into a smart tool
Army To Bring Nuclear Microreactors To Its Bases By 2028
Nissan Says It's On Track For Solid-State Batteries That Double EV Range By 2028
Carbon based computers that run on iron
You Can't Just Link Batteries Willy Nilly and Expect Everything to Be OK
Anyone who has taken introductory physics will recognize this famous question:
Why can't you start your car with 8 AAA batteries instead of one 12 volt car battery?
Eight AAA batteries do add up to 12 volts, but they still can't provide enough electrical current to run the starter motor. But that's not the whole story. Any battery has a limit on the maximum current it can produce.
To explain why, I'll make a model to represent a real battery.
The pair of vertical long-short lines (labeled V0;) right of center represent the ideal battery. Or, in other words, how much current the real battery would produce if it wasn't confounded by resistance (represented by the squiggly line labeled Ri). Yes, all of this ideal battery/confounding resistance stuff is going on inside the actual battery.