ac - Energy stored and Lagging of Current In a Inductive Circuit

In a purely Inductive AC Circuit, the voltage/emf Leads the current in phase by 90. The graph between Voltage and Current is given below:

Now can anyone here please tell me in a more intuitive way how the current is varies sinosuidally with emf in every quarter of cycle? Also how Inductor stores Energy in its Magnetic Field?

I don't need any Mathematical Explanation. Thanks...