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,
the wire is turned from N-S to northeast-northwest direction.

Explanation

If `l_(1)` be the effective length of the wire inside the magnetic field,
`F_(2)=IBl_(1) sin45^(@)=Ibl["since" l_(1) sin 45^(@)=l]`
`=1.57xx7xx0.2=2.1N` (directed vertically downward)