Jeremiah has drawn a diagram of a simple circuit. The circuit is made up a battery, a fan, wires, and a switch. Jeremiah wants to erase one of the parts he has now, and
draw a windmill in its place. Which part should the windmill be used to replace, and
why?

Good moring let me you on this question the answer the electric force  have a good day ; )

It really doesn't matter for any of the questions that you've listed.

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.