Electrical resistivity is a property of materials and is different from electrical resistance which is a property of a component. Resistivity is also known as Specific Electrical Resistance or Volume Resistivity. Resistivity can also be defined as the inverse of the conductivity of a material - Ï = 1 / Ï.It is a measure of how a material opposes the flow of electric current. The SI unit of resistivity is ohm meter (Ï.m).
rated frequencyrated impedancerated outputrated powerrated resistance. rated current. A rated or named value, stating the current that a component, circuit, device, piece of equipment, system consumes, produces, or safely tolerates, when used in a given manner. For example, it may be a rating of the current drawn expressed in RMS amperes after a device is turned on and warmed up. The actual value, or interval of values, may not coincide with this number. Also called nominal current.
Report Abuse. No load usually means an open circuit and therefore no current, but that isn't necessarily so. Power = current x voltage in a DC circuit. In a AC circuit, power = current x voltage x cosÎ¸. Current may flow without using power if the current is 90Â° out of phase with the voltage. So when a generator is connected to a motor and there is no load on the motor, current flows when there is no voltage and voltage is present when there is no current.