Max risk in forex

Hi,



what is the max risk when opening a position in forex?

(I know about margin and stop loss, but in the worst case they have no meaning)



I use the formula



profit = volume x direction x (close - open)



where direction is 1 for long and -1 for short positions.



This means when I go long in EURUSD for a price of 1.06 with 0.1 LOT and the exchange rate goes down to 0 my loss is:

profit = 0.1 LOT x 1 x (0 - 1.06) $ = -10.600 $



Is the correct? And is this the worst case that can happen?



If I do the same for a short position, I have the problem that the exchange rate may go up to any value. Or is there a upper limit?

I already heard for stock a short position has a higher risk than long positions. Is it the same in forex?



Thanks!