Question

Diffusion current furnishes information about
(a) concentration of electroactive species
(b) nature of electroactive species
(c) qualitative understanding of the test solution
(e) reaction involved at DME​

Answer 1

(E) is Wright answer

Answer 2

Answer:

the correct answer is(e) the reaction involved at DME​

Explanation:

Diffusion current furnishes information about

Dielectric current In a semiconductor, density is a current brought on by the diffusion of charge carriers (holes and/or electrons). This current results from the transfer of charges that happens as a result of the semiconductor's non-uniformly distributed charge. In contrast, the drift current results from the mobility of charge carriers as a result of the force of an electric field acting on them. A drift current's direction might be the same as or different from a diffusion current's. The drift-diffusion equation encompasses both the drift current and the diffusion current.

When characterizing many semiconductor devices, the role of diffusion current must be taken into account. For instance, the diffusion current predominates the current in the vicinity of the depletion area of a p-n junction. Both diffusion current and drift current exist within the depletion area. The forward diffusion current in the depletion area balances out with a reverse drift current at equilibrium in a p-n junction, resulting in a net current of zero.

The Haynes-Shockley experiment may be used to calculate the diffusion constant for a material that has been doped. As an alternative, the diffusion coefficient may be calculated using the Einstein relation for electrical mobility if the carrier mobility is known.