Which is true? The net potential change around a closed circuit loop is zero. The net potential change counterclockwise around a closed circuit loop is positive. The net potential change clockwise around a closed circuit loop is positive.

The net potential change around a closed circuit loop is zero. This is absolutely true.

Explanation:

The net potential change around a closed circuit loop is zero because when a charge circulates around a close loop its potential energy changes because it moves round around the loop, but its net potential change is zero when it moves around a close loop.Because its initial and final positions are same.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table