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Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance3 Marks
Question
Define an equipotential surface. Draw equipotential surface:
  1. In the case of a single point charge and,
  2. In a constant electric field in Z-direction.
Why the equipotential surfaces about a single charge are not equidistant?
  1. Can electric field exist tangential to an equipotential surface? Give reason.
✓

Answer

Surface with a constant value of potential at all points on the surface.
  1.  

  1. $\text{V} \propto\frac{1}{\text{r}}/$
  1. No If the field lines are tangential, work will be done in moving a charge on the surface which goes against the definition of equipotential surface.

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