Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

The reverse bias in a junction diode is changed from 5V to 15V then the value of current changes from 38μA to 88μA. The resistance of junction diode will be:

Options:

$4 × 10^5 Ω$

$3× 10^5 Ω$

$2 × 10^5 Ω$

$10^6 Ω$

Correct Answer:

$2 × 10^5 Ω$

Explanation:

$r_r=\frac{V_{r_2}-V_{r_1}}{I_{r_2}-V_{I_1}}=\frac{15-5}{(88-38)×10^{-6}}=2×10^5 Ω$