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The relationship between resistance and temperature is determined by a material's temperature coefficient of resistance (symbol, the Greek letter 'alpha'). In general, pure metal conductors are said to have a positive temperature coefficient of resistance, which means that their resistance increases with increase in temperature; in general, insulators have a negative temperature of resistance, which means their resistance decreases with an increase in temperature. Carbon, a conductor, also has a negative temperature coefficient of resistance. This negative temperature coefficient of resistance explains why insulators fail at higher temperatures.
This topic is relatively complicated, so just one example will be given. Assuming we know the resistance (R0) of a material at 0oC , then we can find its resistance (Rx) at another temperature (Tx), using the following equation:
Rx = R0 (1 + alpha Tx)
What else can I help you with?
What is shunt conductance?
A low-resistance connection between two points in an electric circuit that forms an alternative path for a portion of the current. Also called bypass. Conductance of a shunt is high as the resistance is low.
Relationship between resistance and capacitive reactance?
There is no physical relationship between resistance and capacitive reactance. But if someone tells you that the impedance of something: Z = 3 -4j, the real resistance is 3 and the reactive capacitance is -4.
What is transconductance?
Conductance is the reciprocal of resistance. If it is taken between one output parameter and one input parameter, then it is called transconductance i. e. the ratio of output current to the input voltage.It is given by gm= Iout/Vin
What is ohm's law expressed as a formula?
Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points, and inversely proportional to the resistance between them
What is the relationship between current and resistance?
They are proportional to each other with a constant of 1/V, by rearrangment of the formula V = IR.
What is shunt conductance?
A low-resistance connection between two points in an electric circuit that forms an alternative path for a portion of the current. Also called bypass. Conductance of a shunt is high as the resistance is low.
Relationship between conductance and viscous flow?
viscosity is inversily change with the conductivity
What is the mathematical relationship between current voltage and resistance?
Voltage is the product of current times resistance, V=IR, I is Current and R is resistance. ANSWER: It is a simple ratio of 1:1:1
What is the difference between ohms and mohms?
ohms is the SI unit of resistance MHO (siemens) is the SI unit of reciprocal of resistance ie conductance
What mathematical relationship do you see between voltage and current?
The mathematical relationship between voltage (V) and current (I) in an electrical circuit is described by Ohm's Law, which states that V = I * R, where R is the resistance in ohms. This means that voltage is directly proportional to current, with resistance acting as the proportionality factor. As resistance increases, for a constant voltage, the current decreases; conversely, for a constant resistance, an increase in voltage results in an increase in current. This relationship is fundamental in understanding how electrical circuits operate.
What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
What is the Relationship between resistance and inductance in a RL circuit?
What is the Relationship between resistance and inductance in a RL circuit?
What is the relationship between resistance and capacitance in a clc circuit?
The relationship between resistance and capacitance in a clc circuit is the capacitive reactance given by XC.
Difference between semen and mho which are the units of conductance?
The correct spelling is siemens, and it is the SI unit for conductance -the reciprocal of resistance. The mho is simply an obsolete unit for the same thing, and is numerically equal to the siemens.
What is a monotonic transformation and how does it impact the relationship between variables in a mathematical function?
A monotonic transformation is a mathematical function that preserves the order of values in a dataset. It does not change the relationship between variables in a mathematical function, but it can change the scale or shape of the function.
What does the resistance vs length graph show in terms of the relationship between resistance and length?
The resistance vs length graph shows that there is a direct relationship between resistance and length. As the length of the material increases, the resistance also increases.
What is the difference between specific conductance and equivalence conductance?
Specific conductance is the conductance of a specified length of a substance, typically 1 cm, while equivalence conductance is the conductance of all ions produced by one mole of an electrolyte in solution. Specific conductance is a property of the substance itself, whereas equivalence conductance is a property of the electrolyte in solution.
