Physics Electrostatics Potential & Capacitance Conductor, It's Properties & Electric Pressure Single Correct MCQ
Published on: September 12, 2026

For an electrostatic system which of the statement is always true:

A
electric lines are parallel to metallic surface. and and ,
B
electric field inside a metallic surface is zero. only and and
C
electric lines of force are perpendicular to equi-potential surface. only only

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Text Solution

Verified by Experts
The correct answer is:
B
In electrostatics, one of the fundamental principles is that the electric field inside a conductor in electrostatic equilibrium is zero. This means that any excess charge resides on the surface of the conductor, and the electric field lines must be perpendicular to the surface to maintain equilibrium.
  • Step 1: Consider a metallic conductor in electrostatic equilibrium.
  • Step 2: Inside the conductor, charges redistribute themselves such that the electric field cancels out completely, leading to a net electric field of zero.
  • Step 3: This leads to no electric potential difference inside the conductor, hence it is constant throughout its volume.

Therefore, Option B is correct.

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