Negatively charged free electrons move in one direction , and positively charged holes move ir the opposite direction. true or false​

The correct statement is True.

Explanation:

There are two types of charges in the electric field:

The above two are oppositely charged species and we also know that electric current is the flow of free electrons in a current.

Negative charges (Electrons) flow from the negative terminal to the positive terminal while positive charges (holes) flow from the positive terminal to the negative terminal. Thus, they move in the opposite direction.

Hence, the correct statement is True.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

conservation of mass

mass before something happens = mass afterwards