Equipotential Surfaces
Easyphysics
What is the work done in moving a charge on an equipotential surface?
Select the correct option:
Solution
Incorrect! Answer:
Zero
- Definition: An equipotential surface is a region where the electric potential V is identical at every point.
- Work Formula: W=q(VB−VA).
- Analysis: Since VA=VB for any two points on such a surface, the difference (VB−VA)=0.
- Result: Work done is always zero.
- Geometric Property: This also implies that the Electric Field vector E is always perpendicular to these surfaces, as no component of force acts along the surface.
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About This Question
- Subject
- physics
- Chapter
- electrostatics
- Topic
- equipotential surfaces
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Zero
- Definition: An equipotential surface is a region where the electric potential V is identical at every point.
- Work Formula: W=q(VB−VA).
- Analysis: Since VA=VB for any two points on such a surface, the difference (VB−VA)=0.
- Result: Work done is always zero.
- Geometric Property: This also implies that the Electric Field vector E is always perpendicular to these surfaces, as no component of force acts along the surface.
This easy difficulty physics question is from the chapter electrostatics, covering the topic of equipotential surfaces. It appeared in the 2025 exam.
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