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point charge

American  

noun

  1. an electric charge considered to exist at a single point, and thus having neither area nor volume.


Etymology

Origin of point charge

First recorded in 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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The potential for a point charge is the same anywhere on an imaginary sphere of radius r surrounding the charge.

From Textbooks Aug. 12, 2015

What are the sign and magnitude of a point charge that produces a potential of –2.00 V at a distance of 1.00 mm?

From Textbooks Aug. 12, 2015

The electric potential due to a point charge is, thus, a case we need to consider.

From Textbooks Aug. 12, 2015

Figure 19.12 An isolated point charge Q with its electric field lines in blue and equipotential lines in green.

From Textbooks Aug. 12, 2015

Just as zero punches a hole in the smooth sheet of general relativity, zero smooths and spreads out the sharp point charge of the electron, covering it in a fog.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

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