Electric Permittivity

Mr. Anderson explains electric permittivity in the context of capacitance. He demonstrates creating a simple capacitor using Reynolds Wrap and plastic wrap, highlighting how permittivity affects capacitance. The video covers the structure of a basic capacitor, the role of dielectrics, and how they interact with electric fields. A PHET simulation illustrates how different materials affect capacitance, showing the impact of permittivity on charge storage.

What materials did Mr. Anderson use to create a simple capacitor in the video?

• Steel and rubber

• Aluminum foil and paper

• Reynolds Wrap and plastic wrap

• Copper and glass

What is the permittivity of free space?

• A variable value depending on the material

• A constant value of 1

• The resistance offered by air

• The ability of a material to conduct electricity

How does the permittivity of a material affect a capacitor?

• It affects the weight of the capacitor

• It alters the efficiency of the capacitor

• It changes the color of the capacitor

• It determines the size of the capacitor

What happens to the electrons in a dielectric when an electric field is applied?

• They move to the right

• They remain stationary

• They shift, creating an opposite field

• They disappear

Which material has a dielectric constant of 4.7 as shown in the PHET simulation?

• Air

• Glass

• Paper

• Teflon