The I-V characteristic graph for resistors shows the relationship between the current (I) through the resistor and the voltage (V) across it. The slope of the line in an I-V graph indicates resistance; a steeper slope corresponds to higher resistance. To determine the resistances R1, R2, and R3:
Resistor with a steeper slope (lower rate of current increase with voltage) has higher resistance.
Resistor with a gentler slope (higher rate of current increase with voltage) has lower resistance.
Analyzing the graph, we find:
The line representing R1 has the steepest slope, indicating the highest resistance.
The line representing R3 has the gentlest slope, indicating the lowest resistance.
The line for R2 falls between R1 and R3 in terms of slope.