Diode I–V characteristic understanding: Does a diode’s characteristic curve indicate that, in forward bias, current increases as the applied voltage increases?

Introduction / Context:
The diode I–V curve is fundamental to rectifiers, clippers, clamps, and logic-level translation. In forward bias, a diode exhibits a non-linear, exponential rise in current with increasing voltage, after crossing its forward threshold. Recognizing this behavior is essential for predicting conduction, voltage drops, and thermal effects in practical circuits.

Given Data / Assumptions:

• Standard p–n junction diode behavior (silicon or germanium as examples).
• Forward bias beyond the knee/threshold region.
• Temperature is typical unless otherwise stated; parameters vary but the trend remains.

Concept / Approach:
The ideal diode equation (in plain words) states that current increases exponentially with forward voltage across the junction, moderated by temperature and ideality factor. Real diodes also include series resistance causing slope changes at high currents. Despite these details, the qualitative trend—higher forward voltage leads to higher forward current—is robust and underpins sizing for current, power dissipation, and thermal management.

Step-by-Step Solution:

Verification / Alternative check:
Lab plots with a curve tracer show the forward branch steepening as voltage rises. Datasheets specify forward current at given typical forward voltages (e.g., IF = 1 A at VF ≈ 0.85 V), verifying the directionality of the relationship.

Why Other Options Are Wrong:
Temperature, material, or arbitrary voltage thresholds do not overturn the basic monotonic relationship in forward bias. Claiming “Incorrect” would contradict well-established diode physics.

Common Pitfalls:
Confusing forward behavior with reverse leakage or breakdown; forgetting series resistance reduces the rate of current rise at very high currents.

Final Answer:
Correct