Question
Explain surface charge density.
✓
Answer
$i.$ Consider a charge $q$ uniformly distributed over a surface of area $A$ then the surface charge density $c$ is given as
$\sigma=\frac{q}{A}$
For example, charge distributed uniformly on a thin disc or a synthetic cloth. If the charge is not distributed uniformly over the surface of a conductor, then charge $dq$ on small area element $dA$ can be written as $dq = \sigma dA.$
$ii. \ SI$ unit of $\sigma$ is $(C / m^2)$
$\sigma=\frac{q}{A}$
For example, charge distributed uniformly on a thin disc or a synthetic cloth. If the charge is not distributed uniformly over the surface of a conductor, then charge $dq$ on small area element $dA$ can be written as $dq = \sigma dA.$
$ii. \ SI$ unit of $\sigma$ is $(C / m^2)$
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