Physics - EMI/AC Question with Solution | TestHub

Two long parallel rails separated by a distance ' $\ell$ ' are connected by a movable connector of mass ' $m$ '. Terminals of the rails are connected across a resistor ' R ' and a capacitor C as shown in figure. A uniform magnetic field B perpendicular to the plane of rails is switched on and the connector is dragged by a constant force F . The terminal velocity (in $\mathrm{m}/\mathrm{s}$ ) of the connector is $\frac{1}{\mathrm{v}}$, then find v . (Neglect the friction between rails & connector and take $\mathrm{B}\ell =2\sqrt{\mathrm{FR}}$ ).