definition of resistance physics
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- Adorable animal families that will make you aww. 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.
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- Thanks George. Electrical resistance exacts a voltage drop as the price for allowing electrical current to flow through the resistance. The use of the term resistance implies that the current flow will be in phase with the voltage across the resistor and that the current flow will be proportional to the voltage drop.lectrical resistence is occur in conductor due to over flow of current,in conductor   Answer Resistance is not due to the 'flow of current'. It exists whether current is … flowing or not! Resistance is determined by the type of material and its physical dimensions.
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Ohmmeter resistance (electronics) 1  in electricity, property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current. Resistance involves collisions of the current-carrying charged particles with fixed particles that make up the structure of the conductors.
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permittivity (General Physics) a measure of the response of a substance to an electric field, expressed as the ratio of its electric displacement to the applied field strength; measured in farads per metre. Symbol: ε See also relative permittivity, electric constant.
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chÃ¢teau a stately residence imitating a distinctively French castle. a country estate, especially a fine one, in France or elsewhere on the Continent. (often initial capital letter) a winegrower's estate, especially in the Bordeaux region of France: often used as part of the name of a wine.
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- Electrical resistivity is the reciprocal of conductivity. It is the is the opposition of a body or substance to the flow of electrical current through it, resulting in a change of electrical energy into heat, light, or other forms of energy. The amount of resistance depends on the type of material.
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resistance and ohm law Every material has an electrical resistance and it is the reason that the conductor give out heat when the current passes through it. Resistance is a measure of how much an object opposes the passage of electrons.The unit of electrical resistance is the ohm and it is represented by ω. Every material has Resistance. Copper has a low resistance and wood has a high resistance.For example, a metre of copper has a resistance of only 1 Ohm but a metre of wood has a resistance of 10000000 ohm. We need resistance to reduce the flow of electrons through a circuit, so we can build resistors to behave as Electrical resistance.opper has a low resistance and wood has a high resistance. For example, a metre of copper has a resistance of only 1 Ohm but a metre of wood has a resistance of 10000000 ohm. We need resistance to reduce the flow of electrons through a circuit, so we can build resistors to behave as Electrical resistance.
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- tendency for a material to oppose electron flow and to convert electrical energy into other forms of energy, such as thermal energy and light; measured in ohms. Ohm's law. states that the current in a circuit equals the voltage difference divided by the resistance.
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- Yes the ohm is a unit of resistance. For the International System of Units(SI) this is a derived unit: ohm. Defined from Ohm's Law: a device has a resistance of one ohm when a voltage of one volt causes a current of one ampere to flow (R = V/I).
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resistance resistance - Computer Definition A measure of the opposition by a circuit, component, material, or free space to the flow of an electric current. Resistance is the value of R in the Ohm's Law equation I = V/R, where I is the electric current, and V is voltage, or the difference in electric potential between two points in a circuit.
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resistance A force, such as friction, that prevents or slows down motion: a car shaped to lessen wind resistance. 2. The ability of a material or object to slow down the free flow of electrons of an electric current. Good conductors, such as copper, have low resistance.n. 1. the act or an instance of resisting. 2. the capacity to withstand something, esp the body's natural capacity to withstand disease. 3. (Units). force, such as friction, that prevents or slows down motion: a car shaped to lessen wind resistance. 2. The ability of a material or object to slow down the free flow of electrons of an electric current. Good conductors, such as copper, have low resistance.
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resistance 3. a. the tendency of a conductor to oppose the flow of current, causing electrical energy to be changed into heat. Symbol: R. b. a conductor or coil offering such opposition; resistor. 4. Psychoanal. opposition to an attempt to bring repressed thoughts or feelings into consciousness.
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Resistance and Resistivity 1 Electric resistance is measured in ohms 2  : The resistance of a wire or rod to the flow of electric current depends both on its geometry and its composition. 3  Wires with large cross-sections (thin ones) have small resistance; thick ones have large resistance.
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resistance resistance-the capacity of an organism to defend itself against harmful environmental agents; these trees are widely planted because of their resistance to salt and smog. capability, capacity-the susceptibility of something to a particular treatment; the capability of a metal to be fused.
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Electrical Resistivity: formula & units The electrical resistivity of a material is also known as its specific electrical resistance. It is a measure of how strongly a material opposes the flow of electric current. A definition of resistivity is the electrical resistance per unit length and per unit of cross-sectional area.
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- a. the opposition to a flow of electric current through a circuit component, medium, or substance. It is the magnitude of the real part of the impedance and is measured in ohms. Symbol: R Compare reactance 1. b. (as modifier): resistance coupling; a resistance thermometer.
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Resistance 1 Electrical resistance, the measure of the degree to which a conductor opposes an electric current through that conductor. 2  Friction, 3  Drag (physics) (air resistance), fluid or gas forces opposing motion and flow.  Geological resistance, a measure of how well minerals resist erosive factors.
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resistance Resistance is the opposition that a substance offers to the flow of electric current. It is represented by the uppercase letter R. The standard unit of resistance is the ohm, sometimes written out as a word, and sometimes symbolized by the uppercase Greek letter omega:n an AC circuit, the resistance and reactance combine vectorially to yield impedance. Resistance contrasts with conductance, which is a measure of the ease with which electrical current flows through a substance.
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- The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current whichflows through it:
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Electronics/Resistors resistance edit resistance is a characteristic of resistor indicates the measurement of current opposition resistance has a symbol r measured in ohm ω the ratio of voltage to current is referred to as ohm s law and is one of the most basic laws that govern electronics
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- Resistance and conductivity. The resistance of a conductor is a measure of the opposition to the current flowing in it. The resistance will increase as the length of the conductor is increased and the resistance falls as the diameter of the conductor increases.
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RESISTANCE Meaning: Any mechanical force that tends to retard or oppose motion. Classified under: Nouns denoting natural phenomena. Hypernyms (resistance is a kind of...): mechanical phenomenon (a physical phenomenon associated with the equilibrium or motion of objects) Hyponyms (each of the following is a kind of resistance):
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inertia The resistance of a body to changes in its momentum. Because of inertia, a body at rest remains at rest, and a body in motion continues moving in a straight line and at a constant speed, unless a force is applied to it. Mass can be considered a measure of a body's inertia.
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- define electrical resistance R as the proportionality factor between the voltage V (between the ends of the wire) and the current I (passing through the wire): (18; 2) Ohm found experimentally that in metal conductors R is a constant independentof V, a result known as Ohm’s law.
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RESISTANCE electrical resistance-a material's opposition to the flow of electric current; measured in ohms. electric resistance, impedance, ohmic resistance, resistivity, resistance. electrical phenomenon-a physical phenomenon involving electricity. ohmage-the ohmic resistance of a conductor.lectrical resistance-a material's opposition to the flow of electric current; measured in ohms. electric resistance, impedance, ohmic resistance, resistivity, resistance. electrical phenomenon-a physical phenomenon involving electricity. ohmage-the ohmic resistance of a conductor.
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General Electronics Resistance is the amount of opposition to electrical current. This can be likened to the diameter of a pipe resisting the flow of drainage from the bathtub. The larger the pipe (lower resistance) the faster gravity can pull the water out of the bathtub.