Thursday, January 31, 2019

electromagnetism - Work done by magnetic field



I know Lorentz force don't do any work. but I want to know whether any type of magnetic field do a work or not.





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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...