Question

when does the current flow from one point to another

Answer 1

Hey user...



The electric field accelerates charge. A flow of charge does not require an electric field in the absence of resistance. Think of it this way: in a resistor, the flowing charge carriers interact with the structure of the resistor, losing kinetic energy in the process. To maintain the current, the flow of electric charge, an electric field is required to accelerate the charge. In the absence of these interactions, when there is no resistance to the flow, the charge carriers loose no energy to the wire and thus, require no electric field to maintain the flow...