Question

The applied current cathodic polarization curve of a corroding metal is non-linear at low currents, but it becomes linear at higher currents on a semilogarithmic plot.

(a) False

(b) True

I have been asked this question in examination.

The query is from Modern Theory Applications topic in chapter Modern Theory Applications of Corrosion Engineering

Answer 1

The correct answer is (b) True

The explanation is: The cathodic polarization curve is the curve drawn by measuring over voltage between reference and the working electrode on a semilogarithmic plot. It is non-linear at low currents whereas it becomes linear at higher currents.