Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode D₁ in the circuit i $s ______$ mA. (Assume all diodes in the given circuit are identical)

Question

G1 Physics · Accepted Answer

From the diode orientations in the given circuit, the conducting silicon branches clamp the node voltage to approximately 0.7 V. The voltage across the 0.3 kΩ series resistor is therefore V(R) = 12-0.7 = 11.3 V. Hence the current through the resistor is I = 11.3/(0.3×10³) = 37.67×10⁻³ A = 37.67 mA. The two forward-conducting diode branches are identical, so the current divides equally. Therefore, I(D₁) = I/2 = 37.67/2 ≈ 18.83 mA. Hence the nearest option is 18.8 mA. Correct option: D.

Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode D₁ in the circuit i s ______ mA. (Assume all diodes in the given circuit are identical)