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ab and cd are smooth parallel conducting rods whose separation is L. The tips b and d are electrically connected through a resistance R. A uniform magnetic field B is directed inward perpendicularly to the plane abcd. Another conducting rod ef of mass M is constrained to slide without friction to the right maintaining a constant relative angular orientation € and with initial velocity of vo at time t = 0.
(a) Find the initial induced emf. (b) Find the velocity v at a later time t.

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