A Magnetic Field Cannot Exert Any Force On A


A Magnetic Field Cannot Exert Any Force On A

A magnetic field is a region in space where a magnetic force can be detected. It is created by moving electric charges and magnetic dipoles. A magnetic field can exert a force on a moving charge in the same direction as the direction of the field itself . However, when a magnetic field is present, it cannot exert force on a stationary charge because there is no magnetic force on static charges . Thus, they do not have other magnetic fields to produce force between them.

The force on charge q with velocity v by magnetic field v is given by the formula: F=q ( v X B) . As given that not any force is exerted, so cross product of v and B should be zero .

Magnetic fields are used in many applications such as MRI machines, electric motors, and generators. They are also used in compasses to determine direction .

In summary, a magnetic field cannot exert any force on a stationary charge because there is no magnetic force on static charges. The direction of force is given by Fleming's left-hand rule . The formula for the force on charge q with velocity v by magnetic field v is F=q ( v X B) .

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