My question is, should Vin be 5V for the above formulas?
My question is, should Vin be 5V for the above formulas?
Yes, because that is your source voltage.
If so, how is the 10A of the power source in taken in consideration with the above formulas?
If so, how is the 10A of the power source in taken in consideration with the above formulas?
10 amps is the maximum current your source can provide. Add up the currents in all your branch circuits and it must be less than 10 amps.