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andyb1990
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No Idea how to work this out! -- Charging and discharging an iPod
It takes about 5 hours for a fully charged ipod nano to run out of power when its screen is left on and all other functions are switched off. Subsequently, it takes about 90 minutes to recharge the ipod from a charging unit with a 5V and 500mA output. The same ipod takes about 24hours to run out of power when only the audio function is used
a) calculate the power consumption of the screen and audio output seperately
b) calculate when the power will run out if the user switches on the screen for 10 seconds every 3mins (i.e. about once every track) assuming the ipod is fully charged at the start.
I don't know where to start with this question been stuck on it for hours and can't get anything from it :( please help!
Homework Statement
It takes about 5 hours for a fully charged ipod nano to run out of power when its screen is left on and all other functions are switched off. Subsequently, it takes about 90 minutes to recharge the ipod from a charging unit with a 5V and 500mA output. The same ipod takes about 24hours to run out of power when only the audio function is used
a) calculate the power consumption of the screen and audio output seperately
b) calculate when the power will run out if the user switches on the screen for 10 seconds every 3mins (i.e. about once every track) assuming the ipod is fully charged at the start.
Homework Equations
The Attempt at a Solution
I don't know where to start with this question been stuck on it for hours and can't get anything from it :( please help!