Transformer Voltage unknown number of turns
You don't need to know the primary current if, as I suspect, the question is about two inductors that have 100% coupling (i.e. a perfect transformer). When coupling is 100% and both have the same inductance, you can assume that they both have the same number of turns and this makes it a 1:1 device.

So, work out the RMS voltage on L1 and it will be the same on L2 (open circuit output).


  I have found the primary current so far using ohms law V1/R1+XL1


No, you have to use pythagorus when adding resistive and reactive elements: -