In figure shows three long straight wires $P, Q$ and $R$ carrying currents normal to the plane of the paper. All three currents have the same magnitude. Which arrow best shows the direction of the resultant force on the wire $P$
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(c) The forces ${F_Q}$ and ${F_R}$ are the forces applies by wires $Q$ and $R$ respectively on the wire $P$ as shown in figure. Their resultant force $F$ is best shown by $C$.
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