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- PHY102 Physics II © Dr.Cem Özdoğan
- 24-6 Potential due to a Point Charge
- We know that the electric potential difference between two points i and f is
- The magnitude of the electric field at the site of the test charge
- We set Vf =0 (at ∞) and Vi =V (at R)
- Solving for V and switching R to r, we get
- In this figure the particle with positive charge q produces an electric field E and an electric potential V at point P.
- We find the potential by moving a test charge q0 from P to infinity.
- The test charge is shown at distance r from the particle, during differential displacement ds.
- as the electric potential V due to a particle of charge q at any radial distance r from the particle.