Why electrostatic field is normal to the surface at every point of a charged isolated conductor?

Why ust electrostatic field be noral to the surface at every point of a carged conductor.

At the surface of a charged conductor electrostatic field must be normal to the surface at every point'. Explain.

At the surface of a charged conductor, electrostatic filed must be normal to the surface at every point. Why?

The direction of electrostatic field intensity at a point on the surface of a charged conductor is along the tangent drawn on the surface at that point . Is the statement true or false ?

Why electrostatic field inside a conductor is zero,

Why must electrostatic field at the surface of a charged conductor be normal to the surface at every point ? Give reason.

The electric field intensity at the surface of a charged conductor is