After $12$ hours of continuous charging at a constant current of $2$ amperes a $3\mathrm{.}7$ volt iphone battery is now considered to be fully charged.$$

$($a$)$ How many coulombs of charge is contained in the fully charged battery?$$

$($b$)$ When fully charged how many electrons are in the battery?$$

$($c$)$ When fully charged what is amp$-$hour rating of this battery?$$

$($d$)$ What amount of energy in Joules does the battery provide, if it delivers $0\mathrm{.}15$ amperes of current to a circuit element for $4$ hours?$$

$($e$)$ Could the fully charged battery operate a circuit element requiring $0\mathrm{.}2$ amperes of current for a $24-$hour period of time?

Answer rating: 100% (QA)

Given Charging current 2 amperes Voltage of the iPhone battery 37 volts Time taken to fully charge t... View the full answer