This means that if the voltage is high the current is high and if the voltage is low the current is low. Ohms law graph is a plot of voltage and current where the voltage is plotted on the x axis and current is plotted across the y axis. Ohm S Law Aziza Physics Online Ac Resistance And Impedance In An Ac Circuit Eet 1150 Unit 5 Ohm S Law 2 resistance of all materials changes when they get hot. Resistor voltage current graph . There are some good answers here already but ill add a bit. More collisions gives more resistance. The figure shows voltage and current graphs for a resistorpart a what is the value of the resistance r express your answer using two significant figuresr wpart b what is the emf frequency f express your answer using two significant figuresf hz. Its trying to flow through the metal but the atoms are vibrating more so they are...