Consider the circuit with an ideal p-n diode as shown. Let $V_{\mathrm{P}}$ be the voltage applied at the terminal P . The equivalent resistance between the terminals P and Q is $R_1$ when $V_{\mathrm{P}}=+5.0 \mathrm{~V}$, and $R_2$ when $V_{\mathrm{P}}=-5.0 \mathrm{~V}$.

• A

  $R_1=\frac{5 R}{3}$ and $R_2=\frac{3 R}{5}$
• Correct answer
  B

  $R_1=\frac{3 R}{5}$ and $R_2=\frac{5 R}{3}$
• C

  $R_1=\frac{2 R}{3}$ and $R_2=\frac{5 R}{3}$
• D

  $R_1=\frac{5 R}{3}$ and $R_2=\frac{2 R}{3}$

Hence, the correct answer is option: 'B'.