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Sayan Hati posted an Question
August 15, 2021 • 13:54 pm 30 points
  • IIT JAM
  • Physics (PH)

Magnetostats

The given answer is a) , someone plss explain why it is so

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  • Isha lohan 1 best-answer

    This man is probably running with the speed of electrons in the conductor. And not with any speed near to speed of light, so we do not need to apply relativity here. This is a normal situation. The magnetic field at r distance from infinite wire is equal to. B=u*I/ 2pie*r as given in option a. Now if any one move parallel to the wire, the magnitude of magnetic field with not chage at r distance. So observer should observe the same constant magnetic field. It's not given observer is any charged particle so, any neutral particle do not experience extra force or anything from dynamic concept. Think is from static view.

  • Physics learner

    hey i may be wrong but if we just use ampere circuital law then the magnetic field should be equal to A however force will not be same if there was stationary observer

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