What Is Resistance In Physics

The unit of electrical resistance is ohm which is defined as volt per ampere.

What is resistance in physics. Electrical resistance a material s opposition to the flow of electric current. Drag physics air resistance fluid or gas forces opposing motion and flow. Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance physics synonyms resistance physics pronunciation resistance physics translation english dictionary definition of resistance physics.

The ohm is denoted by the greek letter ω called omega. Geological resistance a measure of how well minerals resist erosive factors. Electrical resistance the measure of the degree to which a conductor opposes an electric current through that conductor. Ohms are named after georg simon ohm 1784 1854 a german physicist who studied the relationship between voltage current and resistance.

The unit of resistance. 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. Electrical resistance is defined as the property of an electrical component to resist the flow of electric current. The actual amount of air resistance encountered by the object is dependent upon a variety of factors.

The si unit of electrical resistance is the ohm ω while electrical conductance is measured in siemens s formerly called mho s and then represented by. Measured in ohms electric resistance. Resistance is a scalar quantity. Resistance is low in substances such as metals that are good conductors and high in materials such as plastic and rubber that are insulators.

The si unit of resistance is ohm. The resistance of an object depends in large part on the material it is made of. 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. Air resistance is the result of collisions of the object s leading surface with air molecules.

To keep the topic simple it can be said that the two most common factors that have a direct effect upon the amount of air resistance are the speed of the object and the cross sectional area of the. Electrical resistance shares some conceptual parallels with the notion of mechanical friction. This is called resistance. Resistance is measured in ohms symbolized by the greek letter omega ω.

One ohm is the resistance of a conductor when a potential difference of 1 volt applied across its ends causes a current of 1 ampere to flow through it.