Will the net force be greater or lesser for objects with greater mass?

The answer is

→ If an object has a greater mass, then the net force will be lesser.

Explanation:

The net force will be lesser because the greater mass the object is, the slower the net force will be.

If we were to talk about lesser mass in an object, then the net force will be faster, but this isn't the case right now.

Hope I could help and cleared it for you! :^)

iron would move it is magnetic there is a mag field around the current in the wire