When a DC coil (relay) is denergized, shouldn't the collapsing field cause a current that would oppose the change in current? Wouldn't that induced current be in the same direction as when the coil was enegized? Not seeing how a freewheeling doide gets forward biased. If I apply Lenz Law, current will flow in a direction that will oppose the force that caused it. The collapsing field caused it (denergizing the coil), the current direction to oppose the collapsing field would be the same current direction that caused an expanding field (energizing the coil). Shouldn't there be a voltage spike across the coil with the same polarity as when the coil field was energized and steady state? Please shed some light on this EET.