Jean Skilling
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resistance to sth The government faces resistance to the bill. There should be no resistance to the new management structure a force which acts to stop the progress of something or make it slower :
The SI unit of electrical resistance is the ohm ( Ω ), while electrical conductance is measured in siemens (S) (formerly called the 'mho' and then represented by ℧ ). The resistance of an object depends in large part on the material it is made of.
The meaning of RESISTANCE is an act or instance of resisting : opposition. How to use resistance in a sentence.
Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage , current and resistance.
Electric resistivity is defined as the electrical resistance offered per unit length and unit cross-sectional area at a specific temperature and is denoted by ρ. Electrical resistance is also known as specific electrical resistance.
May 30, 2024 · Resistance, 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.
Government troops offered no resistance (to the rebels). 政府軍沒有（對叛軍）作出任何抵抗。 There's a lot of resistance (= opposition ) to the idea of a united Europe .
Resistance is the property of a material or component that opposes the flow of electric current through it. It is measured in Ohms and denoted by the symbol “Ω”. Resistance arises due to the interactions between electrons and the atoms or molecules that make up the material.
Having more lamps in series means that the resistance of the circuit is more. Less current flows so the bulbs are dimmer. Resistance is measured in units called ohms, which is represented by...
Jul 9, 2024 · The resistivity is a characteristic of the material used to fabricate a wire or other electrical component, whereas the resistance is a characteristic of the wire or component. To calculate the resistance, consider a section of conducting wire with cross-sectional area A, length L, and resistivity ρ.
Review the key terms, equations, and skills related to current, resistance, and resistivity, including how to find the current direction and what resistance depends on.
Electrical resistance is the hindrance to the flow of charge through an electric circuit. 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.
Ohmic materials have a resistance \(R\) that is independent of voltage \(V\) and current \(I\). An object that has simple resistance is called a resistor, even if its resistance is small. The unit for resistance is an ohm and is given the symbol \(\Omega\) (upper case Greek omega).
resistance to sth The government faces resistance to the bill. There should be no resistance to the new management structure a force which acts to stop the progress of something or make it slower :
Explore the principles of Ohm's law, resistance, and resistivity in electrical circuits. Understand how resistance is defined by voltage and current, and how it remains constant in Ohmic materials. Discover the factors that influence resistance, including the length, cross-sectional area, and material of a resistor.
Jul 11, 2021 · A SIMPLE explanation of Electrical Resistance. Learn what Electrical Resistance is, the symbol and formula for resistance, and AC vs DC resistance. We also discuss heating, temperature and ...
Add to word list. Add to word list. C2 [ U ] the act of fighting against something that is attacking you, or refusing to accept something. 抵抗;反抗;反对. resistance to disease 抗病. Government troops offered no resistance ( to the rebels ). 政府军没有（对叛军）作出任何抵抗。. There's a lot of resistance (= opposition ...
Resistance refers to a measure of the opposition to current flow in a particular electrical circuit. The electrical resistance of an object refers to the measure of its opposition to the flow of electric current. The inverse quantity refers to the electrical conductance.
Use resistivity to calculate the resistance of specified configurations of material. Use the thermal coefficient of resistivity to calculate the change of resistance with temperature. Material and Shape Dependence of Resistance. The resistance of an object depends on its shape and the material of which it is composed.
For a given shape, the resistance depends on the material of which the object is composed. Different materials offer different resistance to the flow of charge. We define the resistivity \(\rho\) of a substance so that the resistance \(R\) of an object is directly proportional to \(\rho\).
May 6, 2020 · Factors that Determine Resistance. Resistance occurs when electrons aren’t able to move through a conductor freely. This is typically due to a lack of free valence electrons in many structures. This leads to an increase in collisions between electrons and ions in a material.
Resistance in an electrical circuit opposes the passage of electrons. The unit of measurement for resistance is the ohm, with the symbol Ω.
