The needle on a compass will always point north unless it is affected by another magnetic field That is close by . Why did the compass point north for oersted first test but not during the student's test explain

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.

I'm pretty sure the answer is c 

It is the areas with lines. this may sound a little confusing, but i hope it !