At distance r from a point charge q, the electric potential is 800 v and the magnitude of the electric field is 260 n/c. determine the value of q.

Current vs. forcewhat type of relationship does this graph show?

Auniform electric field exists in the region between two oppositely charged plane parallel plates separated by a distance of 1.60 cm . a proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 3.20×10-6 s. 1-find the magnitude of the electric field. use 1.60×10-19c for the magnitude of the charge on an electron and 1.67×10-27kg for the mass of a proton 2-find the speed of the proton when it strikes the negatively charged plate

Make a drawing of the electric field lines around a positive charge, then make a second drawing of the electric field lines around a negative charge.