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\(\begin{aligned} F=(\text { force on }& 1 \text { charge } ) \\ & *(\text { no. of charges }) \\ &=\left(q v_{d} \mathrm{B}\right)(n A L) \\ &=\left(n q v_{d} A\right)(L B) \end{aligned} \)
\(F=L I B_{\perp}=L I B \sin \phi=L I \times B \)
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\(\begin{aligned} F=(\text { force on }& 1 \text { charge } ) \\ & *(\text { no. of charges }) \\ &=\left(q v_{d} \mathrm{B}\right)(n A L) \\ &=\left(n q v_{d} A\right)(L B) \end{aligned} \)
\(F=L I B_{\perp}=L I B \sin \phi=L I \times B \)
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