vertigo said:I think it is because it is easy to control the voltage but not easy to control the current. The device responds to the voltage with a current profile. It doesn't respond to current by inducing a voltage.
An I-V (current-voltage) curve shows the relationship between the current flowing through a device and the voltage applied across it. A V-I (voltage-current) curve shows the relationship between the voltage applied across a device and the resulting current.
An I-V curve is more commonly used because it allows for easier analysis of the electrical behavior of a device. In an I-V curve, the current is plotted on the y-axis and the voltage on the x-axis, which follows the conventional direction of current flow. This makes it easier to interpret the behavior of the device.
Yes, you can obtain the same information from both types of curves. The only difference is the direction in which the data is plotted, but the relationship between current and voltage remains the same.
A V-I curve may be used in certain applications where the voltage across the device is the controlled parameter, such as in some transistor circuits. In these cases, the V-I curve would be more informative than an I-V curve.
The shape of an I-V curve can be affected by various factors such as the material properties of the device, temperature, applied voltage, and the presence of external elements such as resistors or capacitors in the circuit.