Need USB-A car charger that will supply 2A for media player. I see them rated for watts.
Car USB-A charger with 2A output?
Amps multiplied by Volts equals Watts.
If you know the Watts and can find the volts then you can do the math for the Amps.
To make it easier… Amps = Watts/Volts
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Indeed Duane :
We all learned that law from Herrn Georg Simon Ohm
who died in 1854 in München.
U = R x I or V = R x I
But this calculation is easier.