the permittivity of free space, which has the value 8.854 187 × 10–12 farad per metre εo Also called absolute permittivity
noun, Electricity. 1. the time rate of flow of electric charge, in the direction that a positive moving charge would take and having magnitude equal to the quantity of charge per unit time: measured in amperes. noun 1. another name for current (sense 8)
noun, Electricity. 1. a vector quantity associated with two equal charges of opposite sign separated by a specified distance, having magnitude equal to the product of the charge and the distance between the charges and having direction from the negative to the positive charge along the line between the charges.
- Electric-discharge lamp
noun 1. another name for fluorescent lamp
noun, Electricity. 1. the part of the electric field that is determined solely by free charges, without reference to the dielectric properties of the surrounding medium: measured in coulombs per square meter. Symbol: D. noun 1. (physics) the electric flux density when an electric field exists in free space into which a dielectric is introduced […]