First, some background. In Faraday's law the reluctance/resistance by "mother nature" to changing the magnetic flux is explicitly recognized by the "-" sign (commonly referred to as Lenz's law), i.e. if the time rate of change of the magnetic flux is positive, an emf is induced so as to oppose this change. Application of this idea allows one to determine the direction of integration in the line integral that that determines the emf. Here's my question: Is there an analogous effect, like a Lenz's law (for current) if the electric field is increasing or decreasing? For example, when a capacitor is charging there is a "growing" electric field dE/dt > 0, producing a displacement current in the same direction as the conduction current flowing into the capacitor and consequently producing an induced magnetic field having the same sense "axially" as that produced by the conduction current. So if now the capacitor is discharged (let's say slowly through a large resistor), the electric field is in the same direction as before, but now dE/dt < 0. Does this reverse the sense of B (axially) and hence the direction of the line integral on the left side of the Ampere-Maxwell equation? Or is the displacement current still in the same direction and just getting smaller, without changing the sense of B? I'm trying to understand the application of Faraday's law and Ampere's law to an electromagnetic wave. I know from Faraday's and Lenz's law the correct "sense" of the line integral, but I'm having trouble convincing myself of the correct sense when applying Ampere's law. I'm sorry for the rather "wordy" question, but I'm hoping someone with a firmer grip on this that I have can help me. Thanks.