GENERAL KNOWLEDGE

Detailed explanation-1: -resistivity, electrical resistance of a conductor of unit cross-sectional area and unit length. A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. High resistivity designates poor conductors.

Detailed explanation-2: -Resistance-Resistance measures how well a material or object conducts electricity. Low resistance means the object conducts electricity well, high resistance means the object does not conduct electricity well.

Detailed explanation-3: -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 ().

Detailed explanation-4: -Electrical conductivity is the ability of a material to conduct an electrical current. Conductor resistance is the inherent resistance to current flow in a conductor. The more electrically conductive a material is the less resistance it offers to current flow.

Detailed explanation-5: -Resistance is measured using an instrument such as an analog multimeter or digital multimeter. Both types of instrument can measure not only resistance, but also current, voltage, and other parameters, so they can be used in a variety of situations.