A rectangular loop with a sliding connector of length \(l=1.0 m\) is situated in a uniform magne....

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A rectangular loop with a sliding connector of length \(l=1.0 m\) is situated in a uniform magnetic field \(B=20 T\) perpendicular to the plane of loop. Resistance of connector is \(r=2 \Omega\). Two resistances of \(6 \Omega\) and \(3 \Omega\) are connected as shown in figure. The external force required to keep the connector moving with a constant velocity \(v=2 m / s\) is \(x\) N. Find \(x\).
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