See Also
Flashcards
If $E$ is the E.M.F. of a battery and $V$ is the terminal voltage, what is the formula for “lost volts”??
$$ Ir = E - IR $$
Why are there “lost volts” in a battery??
Because the battery has some internal resistance.
Why do the lights on old-fashioned cars blink out when you start the engine??
The starter motor requires a high current which increases the lost volts due to internal resistance, so all potential difference is conserved.
What does $Ir$ represent when talking about internal resistance??
The lost volts.
What does $IR$ represent when talking about internal resistance??
The terminal boltage.
Backlinks
Metadata
date: 2021-04-21 18:06
tags:
- '@?school'
- '@?physics'
- '@?public'
- '@?electricity'
- '@?year-1'
title: Physics - Internal Resistance