What determines the amount of inertia an object has

Explanation:

Mass is defined as the amount of matter that makes up a body; which is measured by its inertia.  

It should be noted that inertia is a property of bodies or objects that is related to resistance to changes in its state of motion. So, the amount of inertia that a body possesses depends on its quantity of matter, that is, its mass.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

1 a

2 b

3 b

4 d

5 d

6 d

explanation: