Resistance and resistivity are both properties of materials and components that relate to the flow of electric current. Resistance is a characteristic of a wire or component that measures how difficult it is to pass current through it. Resistivity is a characteristic of the material used to make the wire or component. Resistance is directly proportional to the length and temperature of the conductor, and inversely proportional to the cross-sectional area of the material. Resistivity increases linearly with temperature. The SI unit of resistance is the ohm, and the SI unit of resistivity... Show more Resistance and resistivity are both properties of materials and components that relate to the flow of electric current. Resistance is a characteristic of a wire or component that measures how difficult it is to pass current through it. Resistivity is a characteristic of the material used to make the wire or component. Resistance is directly proportional to the length and temperature of the conductor, and inversely proportional to the cross-sectional area of the material. Resistivity increases linearly with temperature. The SI unit of resistance is the ohm, and the SI unit of resistivity is the ohm-meter. The formula for resistance is R = V/I, or R = ρ(L/A) where V = Voltage, I = Current, and ρ = Resistivity. Related Test: A Level Physics Practice Test: Electric Current, Potential Difference and Resistance Show less
Resistance and resistivity are both properties of materials and components that relate to the flow of electric current.
Resistance is a characteristic of a wire or component that measures how difficult it is to pass current through it. Resistivity is a characteristic of the material used to make the wire or component. Resistance is directly proportional to the length and temperature of the conductor, and inversely proportional to the cross-sectional area of the material. Resistivity increases linearly with temperature. The SI unit of resistance is the ohm, and the SI unit of resistivity is the ohm-meter. The formula for resistance is R = V/I, or R = ρ(L/A) where V = Voltage, I = Current, and ρ = Resistivity.
Related Test: A Level Physics Practice Test: Electric Current, Potential Difference and Resistance
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