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?
o a balance in electric potential
a balance in resistance
O a difference in electric potential
a difference in resistance
Save and Exit
Next
Submat
Mark this and return

c] a difference in electric potential

Explanation:

Here is the complete question

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] a balance in electric potential b] a balance in resistance c] a difference in electric potential d] a difference in resistance

This is because a difference in electric potential due to the battery at the two ends of the wire, will produce an electromotive  force (due to the battery) which will thus cause the charges to move through the wire.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.