Open vs. closed circuits are demonstrated. Conductors and insulators are shown in circuits. Resistivity is defined and the equation is analyzed. Resistivities of common materials are shown. Semiconductors are discussed. The temperature dependence of the resistivities of materials is demonstrated. This is an AP Physics 1/JEE/NEET Topic.
0:01 Open vs. closed circuits
1:33 Resistivity demonstration
4:42 Conductors vs. insulators
5:31 The equation for resistivity
7:55 Resistivities of common materials
10:00 Resistivity depends on temperature