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A positive charge Q, located at the origin, produces an electric potential V = kQ/r at...

A positive charge Q, located at the origin, produces an electric potential V = kQ/r at point r. A point charge q is moved from 4r to r. The increase in its electric potential energy is

Question 19 options:

a)

2kQq/(3r).

b)

kQq/(2r).

c)

kQq/(4r).

d)

kQq/(3r).

e)

kQq/r.

f)

3kQq/(4r).
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