The active mass of Pure solid and pure liquid is considered constant and unity i.e. 1.
So for a reaction that constitutes pure solid or liquid it's equilibrium constant will be...
i1 = 25 μA, V = 200 mV, i2 = 75 μA
a) When in unbiased condition drift current = diffusion current
Diffusion current = 25 μA.
b) On reverse biasing the diffusion current becomes ‘O’.
c)...