Statement
Find the potential at rA with respect to rB due to a point charge Q at the origin and zero reference at infinity.
System Parameters
Permittivity of free space:
Solution
As established in Chapter 5, the potential due to a point charge is
To find the potential difference, the zero reference at infinity is not needed.
Did you ever wonder what a volt really is? Here is an equivalent set of units. You can delete these and try other combinations; Mathcad will tell you when it's equivalent.
The zero reference at infinity may be used to find the potential at either point:
P.13 |
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P.14 Potential Reference Points |
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Check:
