Current, voltage and resistance GapFill

Electricity is the movement of electrical charge, which has applications in every part of the modern world. The rate of flow of charge through a component is known as  powerwork donecurrentpotential difference. The work done by this flow of charge per unit charge across a component is known as  currentflow ratepotential differencepower. The ability of a component to impede the flow of charge is the  resistanceresistivitystopping potentialpower of the component. For a given material, without considering the dimensions of the component, this impedance is known as  resistancepowerresistivitystopping potential of the material.

All of these quantities vary for components in a circuit.  A cellA filament lampAn LDRAn ohmic conductor is a component with constant resistance.  An LDRA filament lampA cellAn ohmic conductor increases in resistance with increasing current.  A semiconductor diodeAn LDRA thermistorA cell has a very high resistance in one direction, so current only passes in one direction.  A filament lampAn LDRA thermistorA cell is designed to have a resistance that decreases with temperature, while  a cella thermistora filament lampan LDR has a resistance that depends on exposure to light.