Q.

A conducting bar moves on two conducting rails as shown in the figure. A constant magnetic field B exists into the page. The bar starts to move from the vertex at time t = 0 with a constant velocity. If the induced EMF is Etn, then value of n is ______.          [2025]


Ans.

(1)

E=lvB

E=2x3×vB and x=vt

E=23v2Bt     Et1