Answer:
The answer is option D.
Explanation:
An EMF device is a device that produces an electromagnetic field and the components that it has also have their own internal resistance.
This is the case in a real life EMF device but for an ideal EMF device, the internal resistance is equal to zero so there is no voltage drop because of that.
The answer is option D.
I hope this answer helps.
The brick because it has more mass which means more potential energy
Hardness, color , and luster.
But since you can pick one, I would say hardness