All Flashcards
What is resistivity ()?
Resistivity () is a material's intrinsic property that quantifies how strongly it resists the flow of electric current.
Define resistance (R).
Resistance (R) is the measure of the opposition to current flow in an electrical circuit. It is measured in ohms ((Omega)).
What is cross-sectional area (A)?
Cross-sectional area (A) is the area of a two-dimensional shape that is obtained by slicing through an object perpendicular to a specified axis. It is measured in square meters ((m^2)).
Define length (L) in the context of resistivity.
Length (L) is the distance between two points along a conductor through which current flows. It is measured in meters (m).
What are conductors?
Conductors are materials with low resistivity, allowing electric current to flow easily through them.
What are insulators?
Insulators are materials with high resistivity, hindering the flow of electric current.
What is the difference between resistivity and resistance?
Resistivity: Intrinsic property of a material. | Resistance: Depends on resistivity, length, and area.
Compare the resistivity of conductors and insulators.
Conductors: Low resistivity. | Insulators: High resistivity.
Label the axes for graphing resistivity of conductive dough.
Vertical Axis: Resistance (R), Horizontal Axis: Length/Area (L/A)