In which of the following figures, diode is reverse biased?

Step-by-step solution

A diode is reverse biased when the potential at its p-side (anode) is less than the potential at its n-side (cathode), i.e., V_p Let us check the potentials for each given figure: For option (A): V_p = 5 V and V_n = 0 V (grounded). Since V_p > V_n , the diode is forward biased. For option (B): V_p = -20 V and V_n = -10 V . Since V_p For option (C): V_p = 15 V and V_n = 10 V . Since V_p > V_n , the diode is forward biased. For option (D): V_p = 20 V and V_n = -5 V . Since V_p > V_n , the diode is forward biased. Thu