Question

The voltage drop across a forward biased diode is 0.7 V. In the following circuit, the voltages across the $10\,\Omega$ resistance in series with the diode and $20\,\Omega$ resistance are

• A. 0.70 V, 4.28 V
• B. 3.58 V, 4.28 V
• C. 5.35 V, 2.14 V
• D. 3.58 V, 9.3 V

Answer 1

Answer: (B)

3.58 V, 4.28 V

Answer 2

Let the currents through the $20\Omega$ (parallel) and $20\Omega$ (in series with the diode) be $I_1$ and $I_2$ respectively.