Question

1)A rod of length(, located along the y-axis has a total charge Q and a uniform linear charge density (. Find the electric potential at a point located on the x-axis a distance x from the origin.

Answer 1

$x-axis distance\\l=x\\Charge=Q\\\lambda=\frac{q}{l}$

Electric potential

$V=\frac{kq}{r}=\frac{k\times\lambda l}{x}$ Where l=x

$V=\frac{k\lambda x}{x}$

V=k$\lambda$

$V=\frac{1}{4\pi\epsilon_0}\lambda$