Consider two positive charges that are initially far apart. An external agents c

Question

Consider two positive charges that are initially far apart. An external agents causes the changes to move closer together. As the charges are being moved closer together, the electrical potential energy of the pair of charges. The SI unit of electric potential is the 'volt'. Which one of the following is not a correct representation of the volt? Consider two point charges. One has a charge of +1 mu C and the other has a charge of -1 mu C. Consider a point P on the line connecting the charges. The point is the same distance from each charge. Which one of the following statements is true concerning the electric field and the electric potential at P?

Explanation / Answer

1)Increases

Because:

electric potential energy is given by:

U = k q1 q2 / r

where, k is the constant, q1 and q2 are the magnitude of chare and r is the distance between them.

We see that U is inversely proportional to "r" and hence with the decrease in the distance between the charges by an external force the electric potential energy increases.

2)N/C

As N/C is the unit of electric field.

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