The voltage over an inductive load is proportional to the derivative of the current through that inductor. V= L*dI/dt In English: if you try to change the current, you will need to apply a voltage. Simpler put: if you simply try to interrupt the current through an inductor (high dI/dt) it will respond with a very high voltage peak. In plainer English: the inductor wants to be left alone, it wants the current to go through it to be stable. Any change in the current, and the inductor will react with a voltage.
The phase angle linking voltage and current in a purely inductive circuit, in ideal conditions where there is no resistance at all, is 90 degrees. This is the relationship of voltage and current in a pure inductive circuit.