Resistivity

This video will show how different factors will be able to affect the resistance of a resistor. This video will explain how material, length and weight can affect the resistance. Temperature and its importance is explained through examples to better understand this concept.

This lesson will look at a resistance and resistivity problem. The example problem will provide information and explain how to solve for the resistance of a new wire, as well as what factors the length of the wire changes as well as if it becomes thinner. This lesson will give a step by step in-depth explanation of the concept by looking at graphs and diagrams to derive formulas to solve.

This lesson will study the resistance of a wire, two wires with the same cross sectional area and connected to the same voltage battery, the only difference being the length. This lesson will give a step by step in-depth explanation of the concept by looking at graphs and diagrams to derive formulas to solve.

This lesson will study the resistance of a wire. This lesson will compare two wires and compare and contrast their similarities and differences in relation to their strength of their electric field, drift, cross section and velocity. This lesson will explain how to derive a formula to solve by looking at a diagram to better understand the concept.

A practical electrical power source which is a linear electric circuit may, according to Thévenin's theorem, be represented as an ideal voltage source in series with an impedance