In the given figure, a diode D is connected to an external resistance R = 100 Ω and an emf of 2.5 V. During forward bias, if the barrier potential developed across the diode is 0.6 V, the current in the circuit will be

19 mA

The correct answer is Option (1) → 19 mA

Current in the circuit: $I = \frac{V_\text{emf} - V_\text{diode}}{R}$

Given: $V_\text{emf} = 2.5\ \text{V}$, $V_\text{diode} = 0.6\ \text{V}$, $R = 100\ \Omega$

Substitute values:

$I = \frac{2.5 - 0.6}{100} = \frac{1.9}{100} = 0.019\ \text{A}$

Final Answer: $I = 19\ \text{mA}$