You need to increase the source of current, by adding another 20v 3.2amp source in parallel with the original.
Adding a resistor will not help, but will make matters worse, either with reduced voltage, in series, or reduced current if in parallel.
Only one way to do it........
Using this small current source to charge a high AH rate 20V battery, and then obtain high current output from battery.
Adding more resistors reduce more current !!!
I would skip the "in parallel" you need to buy a properly rated power supply that is almost 16 times as big and powerful as the one you have (5 / 0.32 = 15.625)
With your Available Source ( 20Volts 0.32Amps) No chance to get 20V 5Amps at all. Better find another (20Amps 5Amps) source to get your requirement that will be much better & cheaper instead of wasting your time.
You want same voltage with more current. That means more power. The only way is to obtain more sources and connect in parallel.
i have a source which produces 20 volts DC with 0.32 A current. but i want to get 20 volts with 5 Ampere current how can i do that??
plese help so that i can get 20 Volts and 5 Ampere current
will addding resistor help ??