What do you mean by dipole moment and relaxation time
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A dipole moment is a measurement of the separation of two opposite electrical charges. Dipole moments are a vector quantity. The magnitude is equal to the charge multiplied by the distance between the charges and the direction is from negative charge to positive charge: μ = q · r
Relaxation time is the time interval between two successive collisions of electrons in a conductor, when current flows. Relaxation time can be defined as the time taken by electron to attain an average velocity which is 1/e times its value
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