Two perfectly conducting rails 1 and 2 lie perpendicular to a uniform magnetic field B(into the plane of paper as shown). Separation between the rails is l. Two bars AB and CD are placed perpendicular to the rails and move away from one another with velocity v. If the resistance of the bars are R and R2 respectively, the current in the bars is given by xBlv3R. The value of x2 is

Two perfectly conducting rails 1 and 2 lie perpendicular to a uniform

1.	Two perfectly conducting rails 1 and 2 lie perpendicular to a uniform magnetic field B(into the plane of paper as shown). Separation between the rails is l. Two bars AB and CD are placed perpendicular to the rails and move away from one another with velocity v. If the resistance of the bars are R and R2 respectively, the current in the bars is given by xBlv3R. The value of x2 is
Answer» Two perfectly conducting rails $1$ and $2$ lie perpendicular to a uniform magnetic field $B$ (into the plane of paper as shown). Separation between the rails is $l$ . Two bars $A B$ and $C D$ are placed perpendicular to the rails and move away from one another with velocity $v$ . If the resistance of the bars are $R$ and $\frac{R}{2}$ respectively, the current in the bars is given by $\frac{x B l v}{3 R}$ . The value of $x^{2}$ is

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