In the diagram, the arrow shows the movement of electric charges through a wire connected to a battery. What causes the electric charges to flow from one end of the battery to the other?

-a balance in electric potential
-a balance in resistance
-a difference in electric potential
-a difference in resistance

Your answer is C

Explanation:

-a difference in electric potential

Hope this helps :)

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.