Recent content by bravo340

Homework Statement We have a non uniform line charge density P_{l} = \rho_{l} cos\phi It is a spiral line where 0 \leq \phi \leq 4 \pi It is on the x-y plane with z=0. r varies: r ( \phi ) = \phi * r_{0} + a We need to find the Potential and Electric Field at the origin...