Question

The direction of the diffusion current depends on

• A. Applied field
• B. Mobility of charge carrier
• C. Charge carrier concentration
• D. Permittivity

Hint:

When dealing with diffusion current, always focus on the concentration gradient of charge carriers, as this governs the flow of current.

Answer 1

The Correct Option is C

The direction of diffusion current depends on the charge carrier concentration. Diffusion current occurs due to the movement of charge carriers (electrons or holes) from regions of high concentration to regions of low concentration. This is driven by the concentration gradient of the carriers. Thus, the correct answer is option (3).