Electric field just outside a charged conductor is perpendicular to the surface and has a magnitude σ/2ε.
a. true
b. false

The answer is False

Explanation:

For a infinite sheet of charges, the electric field is perpendicular to its surface. To calculate the electric field, we use a Gaussian surface (cylinder), getting that

from where

Then the field calculated is one half of the field of a conductor charged with , this means that the magnitude of the charged conductor is

Therefore the answer is False.

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