Question about Leverage/Margin/Position Sizing

I came up with a little equation that should tell me how many pips a trader can lose before getting a margin call.
We assume that we always go long EURUSD (short would just be the opposite) and our account is in $. We assume that Margin Level for margin call is 100% meaning when Equity = Current Margin Used then you get the margin call.

R = ratio of Initial Used Margin (as a proportion of Balance). R = Initial Used Margin/Balance
L = Broker's leverage
A = ratio of negative (because we are long) change in the rate before we get a margin call.

A = (1-1/R)/(1-L)

For example:

R= 0.5 meaning out of $10,000 balance we will use $5,000 as Initial Used Margin. L=50.
A = 2.0408%

So EURUSD can fall 2.0408% (or rise if we're short) before we get a margin call. If the rate is 1.1117 then this would be equivalent to 227 pips.

Is this correct?

explanation of the calculation is here. https://www.babypips.com/learn/forex...ll-exemplified


If day trading, a margin call is "Fail", a Stop Loss is a 'Fail-safe". I argue a 2% SL being hit is also a fail - as one knows they are in a bad trade before SL is hit, so should exit taking small loss.

Not what I asked bro

thats ok, i'm nice like that.

Anyone else?