Question

Explain linear charge density. Write it's unit.

Answer 1

Linear charge density: when the charge density is along a line, then the quantity of charge per unit length is called linear charge density and it is represented by $\lambda$.

$\lambda =\frac{q}{l},$ whwre $q$ is charge uniformly distributed on length l.

Unit of $\lambda =C{m}^{-1}$

Example: If $q$ charge is uniformly distributed on a ring of radius $R$, then the linear charge density of ring will be $\frac{q}{2\pi R}$