Question

Write the letters of the correct answers on the lines at left.

Answer 1

Answer:

The answer is letter D.

Explanation:

Electricity is the flow of electrons in a material in a specific direction. When we connect a differential potential between a conducting material, all valence electrons (the electrons which are in the outer shell of the electronic configuration of the atom) must move freely through the atom. This is the definition of a conducting material.

By the other hand in insulating materials, the valence electrons are bound tightly to their atoms, impeding the movement of the electrons due to the differential potential.

Therefore the answer will be letter D, electricity will flow if the electrons are bound loosely to their atoms in the material.  

I hope it helps you!