Definitions for **"I-V curve"**

The I-V curve or the â€œApplied Current vs the Voltage Dropâ€ curve is the standard curve measured to observe a materialâ€™s superconductivity and critical current. The voltage drop across the superconductor material is measured as a function of the applied current. The I-V curve is used to determine physical parameters such as the superconducting critical current, the critical current density and the n-value of the material.

A graphical presentation of the current versus the voltage from a photovoltaic device as the load is increased from the short circuit (no load) condition to the open circuit (maximum voltage) condition. The shape of the curve characterized cell performance.

The plot of the current versus voltage characteristics of a photovoltaic cell, module or array. Three important points on the I-V curve are the open-circuit voltage, short-circuit current, and peak power operating point.