Question

what is resistance and resistivity?​

Answer 1

Answer:

Resistance is defined as the property of the conductor which opposes the flow of electric current.

Resistivity is defined as the resistance offered by the material per unit length for unit cross-section. The SI unit of resistivity is Ohm. meter.

Answer 2

Explanation:

Resistance

Resistance is a measure of the opposition to current flow in an electrical circuit.

Resistance is measured in ohms, symbolized by the Greek letter omega (Ω).

Conductors: Materials that offer very little resistance where electrons can move easily. Examples: silver, copper, gold and aluminum.

Resistivity

Materials are divided based on their conducting properties as conductors, semiconductors, and insulators. The electrical resistivity of a material is defined as the resistance of the material per unit length and per unit cross-sectional area at a specified temperature.

When a potential difference is applied across a substance, the resistance property of the substance opposes the flow of current through it. This property of the substance varies with the temperature and also depends on the type of material the substance is made up of. it measures the resistance of the substance.

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