What determines the following?
a. How much current is supplied (at a constant voltage) by an ideal voltage source.
b. How much voltage is supplied (at a constant current) by an ideal current source.
2.7 An automotive battery is rated at 120 A-h. This means that under certain test conditions it can output 1 A at 12 V for 120 h (under other test conditions, the battery may have other ratings).
a. How much total energy is stored in the battery?
b. If the headlights are left on overnight (8 h), how much energy will still be stored in the battery in the morning? (Assume a 150-W total power rating for both headlights together.)
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