1.

A conducting rod AB moves parallel to x-axis in the x-y plane. A uniform magnetic field B pointing normally out of the plane exists throughout the region. A force F acts perpendicular to the rod, so that the rod moves with uniform velocity v. The force F is given by (neglect resistance of all the wires)

Answer»

`(VB^(2)l^(2))/(R)e^(-t//RC)`
`(vB^(2)l^(2))/(R)`
`(vB^(2)l^(2))/(R)(1-e^(-t//RC))`
`(vB^(2)l^(2))/(R)(1-e^(-2t//RC))`

SOLUTION :Formation of `PbSO_(4)` is PREVENTED in extraction of lead by carbon reduction


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