A long cylindrical shell has a uniform current density. The total current flowing through the shell is 6 mA. The permeability of free space is 1.25664 × 10^−6 T · m/A. length = 6 km outer shell radius = 7 cm inner shell radius = 3 cm The current is 6 mA . Find the magnitude of the magnetic field at a point r1 = 3.8 cm from the cylindrical axis. Answer in units of nT.

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A: force on a moving charge F = q v B Sin θ      θ= angle between v and B DIRECTION  OF FORCE = V X B…

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.