Two parallel, conducting rails 1 and 2 are kept perpendicular to a uniform magnetic field (B). The rails are at seperation l and are joined at their ends by a resistance R. A conducting bar AB is placed on the rails making 60∘ with them. The bar is pulled with a velocity v parallel to the rails. Find the current in the resistance R.

Two parallel, conducting rails 1 and 2 are kept perpendicular to a uni

1.	Two parallel, conducting rails 1 and 2 are kept perpendicular to a uniform magnetic field (B). The rails are at seperation l and are joined at their ends by a resistance R. A conducting bar AB is placed on the rails making 60∘ with them. The bar is pulled with a velocity v parallel to the rails. Find the current in the resistance R.
Answer» Two parallel, conducting rails $1$ and $2$ are kept perpendicular to a uniform magnetic field $(B)$ . The rails are at seperation $l$ and are joined at their ends by a resistance $R$ . A conducting bar $A B$ is placed on the rails making $60^{\circ}$ with them. The bar is pulled with a velocity $v$ parallel to the rails. Find the current in the resistance $R$ .

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