In the figure (Figure 1) there are two point charges, + q and ? q . There are al

Question

In the figure (Figure 1) there are two point charges, +q and ?q . There are also six positions, labeled A through F, at various distances from the two point charges. You will be asked about the electric potential at the different points (A through F).

Rank the locations A to F on the basis of the electric potential at each point. Rank positive electric potentials as higher than negative electric potentials.

Rank the locations from highest to lowest potential. To rank items as equivalent, overlap them.

Explanation / Answer

Potential =V =kq/r

At point nearer to +q, potential is more,at point nearer to -q, potential is less and negative.

At point equidistant from +q and -q, potential is zero

Point B is nearest, potential at point B is largest

Potential at point A is less than potential at point B

Points C and D are equidistant, potential at point C and point D is zero

Potential at point F is negative and less than potential at point B, point A, point C and point D but more than potential at point E

Ranking from largest to smallest

B,A,C,D,F,E

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