Question

What is the range of current density around corrosion potential that will observe that the applied current density is a linear function of the electrode potential?

(a) 10 mV more noble or active around corrosion potential

(b) 5 mV more noble or active around corrosion potential

(c) 10 V more noble or active around corrosion potential

(d) 5 V more noble or active around corrosion potential

The question was posed to me in an online quiz.

The origin of the question is Modern Theory Applications topic in division Modern Theory Applications of Corrosion Engineering

Answer 1

Right option is (a) 10 mV more noble or active around corrosion potential

Easiest explanation: In around 10 millivolts around corrosion potential, it is observed that the applied current density is a linear function of the electrode potential. It is known as a linear polarization curve.