Metals have which are in constant random motion. As they move about they collide with each other and with the atoms of the metal. If we connect a current source to the conductor, the electrons will align in the same direction leading to current flow. the progress of electrons is interrupted by collisions. These collisions restrict their movement and this property of the material is called its resistance. If the temperature of the metal is raised the atoms vibrate more strongly and the electrons make more violent collisions with them and so the resistance increases.
Hence, the resistance of metals increases with temperature.
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SANTOSH KUMAR
June 21, 2018Metals have which are in constant random motion. As they move about they collide with each other and with the atoms of the metal. If we connect a current source to the conductor, the electrons will align in the same direction leading to current flow. the progress of electrons is interrupted by collisions. These collisions restrict their movement and this property of the material is called its resistance. If the temperature of the metal is raised the atoms vibrate more strongly and the electrons make more violent collisions with them and so the resistance increases.
Hence, the resistance of metals increases with temperature.