An infinite non conducting sheet has a surface charge density σ = +5.80 pC/m2.
(a) How much work is done by the electric field due to the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.56 cm from the sheet?
(b) If the electric potential V is defined to be zero on the sheet , what is V at P?