Which side of a PWM MOSFET should an inductor go on?
What you are describing is effectively a buck converter - with the caution that by smoothing full current pulses you may get a result that you do not expect. To do this properly you need to adjust the PWM cycle so that the output current is what you want. In this case you want to monitor for 1A or less (which you specify) and adjust accordingly.

See diagram below. Note that if you are interrupting the supply to the inductor then ou must also provide a "freewheel" diode as shown to provide a path for the continued current. This needs to be rated at the mean output current and be a fast enough device to handle the switching frequency.



Diagram from here

Comment or add to the question (and let us know you have done so in a comment) if more information is wanted.

The question could be improved. Knowing more about what you are trying to do and what equipment is involved will help us give you a better answer. What is the load? What is the source and why are you wanting to reduce the current? What is the output voltage intended to be? etc.