How to find current in this case

[yvqn9945]

I have a mobile charger rated 5v, 500mA. I want to find out current distributed by this charger so if I place a series resistor (don't worry about resistor value) with a Ammeter it give current less than 500mA because of resistor so how I get this 500mA value. How manufacturers give this current value and how to verify it using Ammeter or any formula.

 

[treez]

5V doesn't correspond to any particular common battery voltage....eg one lithium is about 4.2V......

I reckon the "charger" you speak of is just a dumb 5V power supply, with a maximum current rating of 500ma.......the actual charger is in your phone....and it will regulate the current...yu cannot adjust this unless you open your hone up but its not recommended.