A region of width L contains a uniform magnetic field B directed into the plane of the figure. A square conducing loop of side length `l ( lt L)` is kept with its side AB at the boundary of the field region (see Figure). The loop is pushed into the field region with a speed such that it just manages to exit the field region. Calculate the time needed for the entire loop to enter the field region after it is pushed. Mass and resistance of the loop is M and R respectively.

A region of width L contains a uniform magnetic field B directed into

1.	A region of width L contains a uniform magnetic field B directed into the plane of the figure. A square conducing loop of side length `l ( lt L)` is kept with its side AB at the boundary of the field region (see Figure). The loop is pushed into the field region with a speed such that it just manages to exit the field region. Calculate the time needed for the entire loop to enter the field region after it is pushed. Mass and resistance of the loop is M and R respectively.
Answer» Correct Answer - `(MRl n2)/(B^(2)l^(2))`

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