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jyotirmaya ojha
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Lets say you have an electromagnet which produces some magnetic field when current is passed through it . Now there is some magnetic field in its surrounding then it is expected to exert some torque according to the formula torque=magnetic moment*magnetic field .Now my question is :
will the magnetic field used in this formula be just of the surrounding or the net vector addition of surrounding magnetic field and its own magnetic field ?
will the magnetic field used in this formula be just of the surrounding or the net vector addition of surrounding magnetic field and its own magnetic field ?