Question

a charge of 4c is uniformly distributed on a 2km wire find it's linear charge density​

Answer 1

Answer: The linear charge density is $\sigma = 2\times10^{-3} C/m$

Explanation:

Given that,

Charge q = 4 C

Length l = 2 km

We know that,

The linear charge density is the ratio of the charge and length of the wire.

$\lambda = \dfrac{q}{l}$

$\lambda = \dfrac{4}{2\times10^{3}}$

$\lambda = 2\times10^{-3} C/m$

Hence, The linear charge density is $\sigma = 2\times10^{-3} C/m$.