Resistance Meaning In Physics

Electrical resistance opposition of a circuit to the flow of electric current.

Resistance meaning in physics. The moving electrons collide with each other as well as with the positive ions present in the metallic conductor. The constant of proportionality is defined as the resistance r. The unit of resistance. 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 is low in substances such as metals that are good conductors and high in materials such as plastic and rubber that are insulators. This is called resistance. What is resistance of a conductor the movement of electron gives rise to the flow of current through metals. 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.

Ohm s law states that the current i flowing in a circuit is proportional to the applied potential difference v. Drag physics air resistance fluid or gas forces opposing motion and flow geological resistance a measure of how well minerals resist erosive factors hydraulic conductivity the ease with which water can move through pore spaces or fractures in soil or rock. Resistance physics synonyms resistance physics pronunciation resistance physics translation english dictionary definition of resistance physics. If v and i are measured in volts and amperes respectively r is measured.

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. These collisions tend to slow down the speed of. Electrical resistance a material s opposition to the flow of electric current. What is the definition of resistance in physics.

Resistance definition the act or power of resisting opposing or withstanding. Electrical resistance is the hindrance to the flow of charge through an electric circuit. 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. Measured in ohms electric resistance impedance ohmic resistance.