Resistance Definition Physics

When an electric current of one ampere passes through a component across which a potential difference voltage of one volt.

Resistance definition physics. The standard unit of resistance is the ohm sometimes written out as a word and sometimes symbolized by the uppercase greek letter omega. The unit of resistance. Resistance definition the act or power of resisting opposing or withstanding. The moving electrons collide with each other as well as with the positive ions present in the metallic conductor.

Electrical resistance a material s opposition to the flow of electric current. The amount of resistance in a wire depends upon the material the wire is made of the length of the wire and the cross sectional area of the wire. These collisions tend to slow down the speed of. Resistance is low in substances such as metals that are good conductors and high in materials such as plastic and rubber that are insulators.

Resistance is the opposition that a substance offers to the flow of electric current it is represented by the uppercase letter r. Drag physics air resistance fluid or gas forces opposing motion and flow. Resistance is the property of the material that restricts the flow of electrons. Electrical resistance is the hindrance to the flow of charge through an electric circuit.

What is resistance of a conductor the movement of electron gives rise to the flow of current through metals. This is called resistance. There are four factors affecting resistance which are temperature length of wire area of the cross section of the wire and nature of the material. In physics resistance is a measure of the tendency of a material to resist the flow of an electrical current it is dependent on the nature of the material its thickness and length and on temperature.

In electronics and electromagnetism the electrical resistance of an object is a measure of its opposition to the flow of electric current the reciprocal quantity is electrical conductance and is the ease with which an electric current passes electrical resistance shares some conceptual parallels with the notion of mechanical friction the si unit of electrical resistance is the ohm ω. Resistance physics synonyms resistance physics pronunciation resistance physics translation english dictionary definition of resistance physics. Geological resistance a measure of how well minerals resist erosive factors. Measured in ohms electric resistance impedance ohmic resistance.

Is the ohm and it has the symbol ω an.