A wire is bent into the shape seen in the figure on the left, in the plane of the paper. It carries a current of $1\mathrm{.}4$ A $,$ flowing from points $\backslash ($ A $\backslash )$ to $\backslash ($ E $\backslash ),$ as shown in the figure. It is placed in a uniform magnetic field of $0\mathrm{.}39$ T in the same plane, directed as shown on the right side of the figure. The figure indicates the dimensions of the wire. What is the magnitude of the force $($in N $)$ acting on section $\backslash ($ A B $\backslash )$ of this wire?

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