In circuit #1 I showed typical adjustable power supply usage it can limit voltage and current, all good.
It got me thinking. Let's say due to some reasons I can't replace battery with a power supply but I can connect it in series like showed in circuit #2. If I set power supply voltage to 0V (to keep same voltage) and current limit to some value.
Would it limit the current? Can I damage power supply by doing it? If I set positive or negative voltage would it still work the same?