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What is the formula for temperature coefficient of resistance?

Temperature coefficient of resistance (TCR) is the calculation of a relative change of resistance per degree of temperature change. It is measured in ppm/°C (1 ppm = 0.0001%) and is defined as: TCR = (R2– R1)/ R1 (T2– T1). For high-precision resistors, this specification is typically expressed in parts per million (ppm) per degrees Celsius ...

What is the temperature coefficient of a resistor?

The temperature coefficient of resistance, or TCR, is one of the most important parameters that characterize a resistor performance. The TCR defines the change in resistance as a function of the ambient temperature. The common way to express the TCR is in either ppm/°C (or ppm/°K), which stands for parts per million per degree Celsius (or Kelvin).

Why does temperature increase when resistance increases?

This may be expected to happen because, as temperature changes, the dimensions of the conductor will change as it expands or contracts. However, materials that are classed as CONDUCTORS tend to INCREASE their resistance with an increase in temperature. INSULATORS however are liable to DECREASE their resistance with an increase in temperature.

What is temperature resistance?

What is the Temperature Coefficient of Resistance? The temperature coefficient of resistance which is briefly termed as TCR is defined as the variation in electrical resistance of the substance in correspondence with the variation in temperature. It has to be noted that the resistivity of materials varies with temperature because of two reasons.


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