Question 3393
when you say solve, i hope you mean re-write the equation?


I(nr+R) = nE
Inr + IR = nE
Inr + IR - nE = 0
Inr - nE = -IR
n(Ir - E) = -IR
{{{n = (-IR)/(Ir - E)}}}


or, being snazzy...


{{{n = (IR)/(E - Ir)}}}

jon