लॉरेंज बल ( Lorentz Force)

Maxwell Equation And Lorentz Force

Which one of the following is not correct about Lorentz Force?

In case Hall effect for a strip having charge Q and area of crosssection A , the Lorentz force is

A charged particle is moving on a circular path of radius R in a uniform magnetic field under the Lorentz force F. How much work is done by the force in one round? Is the momentum of the particle changing?

A stationary charge experiences no magnetic Lorentz force. Why?

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