1. What is the general relation between electric field E and potential difference?
2. Electric potential is a vector or a scalar? point P in space is V₁= The electric potential at any (equal to the integral of electric field along a line from that point to infinity, if we choose zero electric potential at infinity.)
3. How to determine the electric field (vector) E from the electric potential Ov V(x, y, z)? (Hint: is the partial derivative of V with respect to x, and take y Ox and z as constant.)​