मराठी

Define Temperature Coefficient of Resistance of the Material of a Conductor. - Physics (Theory)

Advertisements
Advertisements

प्रश्न

Define temperature coefficient of resistance of the material of a conductor. 

एका वाक्यात उत्तर

उत्तर

Temperature coefficient of resistance is defined as the change in resistance per unit original resistance at 0°C per degree centigrade rise of temperature.

shaalaa.com
Temperature Dependence of Resistance
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2013-2014 (March)

APPEARS IN

संबंधित प्रश्‍न

A silver wire has a resistance of 2.1 Ω at 27.5°C, and a resistance of 2.7 Ω at 100°C. Determine the temperature coefficient of resistivity of silver.


The order of coloured rings in a carbon resistor is red, yellow, blue and silver. The resistance of the
carbon resistor is:

a) 24 x 106 Ω ± 5%

b) 24 x 106 Ω ± 10%

c) 34 x 104 Ω ± 10%

d) 26 x 104 Ω ± 5%


Consider a circuit containing an ideal battery connected to a resistor. Do "work done by the battery" and "the thermal energy developed" represent two names of the same physical quantity?


Is work done by a battery always equal to the thermal energy developed in electrical circuit? What happens if a capacitor is connected in the circuit?


Consider the following statements regarding a thermocouple.
(A) The neutral temperature does not depend on the temperature of the cold junction.
(B) The inversion temperature does not depend on the temperature of the cold junction.


The 2.0 Ω resistor shown in the figure is dipped into a calorimeter containing water. The heat capacity of the calorimeter together with water is 2000 J K−1. (a) If the circuit is active for 15 minutes, what would be the rise in the temperature of the water? (b) Suppose the 6.0 Ω resistor gets burnt. What would be the rise in the temperature of the water in the next 15 minutes?


A metallic wire has a resistance of 3.0 Ω at 0°C and 4.8 Ω at 150°C. Find the temperature coefficient of resistance of its material.


In the absence of an electric field, the mean velocity of free electrons in a conductor at absolute temperature (T) is ______.

The example of non-ohmic resistance is ______.

The specific resistance of all the metals is the most affected by ______


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×