Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

When the reverse potential in a semiconductor diode are 10V and 20V, then the corresponding reverse currents are 25μ A and 50μ A respectively. The reverse resistance of junction diode will be:

Options:

40 

$4 × 10^5 Ω$

40KΩ

$4 × 10^{–5} Ω$

Correct Answer:

$4 × 10^5 Ω$

Explanation:

$r_r=\frac{V_{r_2}-V_{r_2}}{I_{r_1}-I_{r_1}}=\frac{20-10}{(50-25)×10^{-6}}=4 × 10^5 Ω$