• The open$-$circuit $($or zero$-$current$)$ voltage across theterminals of a battery is measured, via a voltmeter, to be $12\mathrm{.}0$ V$.$ The battery is thenattached to a load that draws $1\mathrm{.}0$ A and the voltmeter now reads $11\mathrm{.}9$ V$.$ What is the internal resistance of the battery? How much power does the battery dissipate? How much power does battery supply to the load?