Resistivity

Mr. Anderson explains resistivity, a property of materials that opposes electric charge flow. He demonstrates this using examples of gold, glass, and silicon, highlighting their different resistivity levels. The video distinguishes resistivity from resistance, explaining how factors like material structure and temperature affect resistivity. It also covers how to measure resistivity accurately, emphasizing the importance of using precise tools and considering material dimensions.

Which material is used in the example to demonstrate low resistivity?

• Glass

• Gold

• Silicon

• Copper

What is one factor that can change the resistivity of a material?

• Shape

• Color

• Temperature

• Weight

Which of the following is NOT a component of a resistor?

• Length

• Cross-sectional area

• Conductors

• Voltage

What happens to the resistivity of metals as temperature increases?

• It becomes zero

• It remains constant

• It decreases

• It increases

How does the resistivity of semiconductors change with increasing temperature?

• It becomes infinite

• It increases

• It decreases

• It remains constant