Definition of Mass To Charge Ratio

The mass to charge ratio is represented as m/Q and it is a physical quantity that is quite widely used for charged particles. The ratio tells us about the electrodynamics of these charged particles for example ion and electron optics. This is primarily used in cathode ray tubes, electron microscopy, nuclear physics, mass spectrometry, etc.


The significance of this mass to charge ratio is that if two particles are having the same mass to charge ratio and the same electric and magnetic fields are applied, then the particles will move in the same path in a vacuum. The System International (SI) units for mass to charge ratio is kg/C where C denotes Coulomb.

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