A uniforme magnetic field of 1.5T exists in a cylindrical region of radius 10.0 cm. Its direction parallel to te axis along east to west. A wire carrying current of 7.0a. In the north to south direction passes through this region. What is the magnitude and direction of the force on the wire if, that wire in the N-S direction is lowered from the axis by a distance of 6.0cm.

A uniforme magnetic field of 1.5T exists in a cylindrical region of ra

1.	A uniforme magnetic field of 1.5T exists in a cylindrical region of radius 10.0 cm. Its direction parallel to te axis along east to west. A wire carrying current of 7.0a. In the north to south direction passes through this region. What is the magnitude and direction of the force on the wire if, that wire in the N-S direction is lowered from the axis by a distance of 6.0cm.
Answer» Solution :When the wire is LOWERED by 6 cm from the axis then the effective length of the wire inside the MAGNETIC field is 2a [Fig. 1.98]. From FIGURE `a=8` cm `F=IB*2a=1.5xx7xx0.16N` `=1.68N` (directed VERTICALLY DOWNWARDS)

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