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Transcribed Image Text:3. The basic principle of magneto-hydrodynamic (MHD) generators used
for generating electricity is described here by a simple model that
consists of a parallel plate capacitor immersed in a stream of a
conducting liquid in presence of a uniform magnetic field of induction B
pointing perpendicular to the stream and parallel to the plates. Area of
each plates is A, distance between the plates is d and electrical
conductivity of the liquid is o. The liquid flows between the plates with
a constant velocity v towards the left. If a resistance R is connected
across the capacitor plates how much power will it dissipate? From
where does this power come? Ans. (UBd)AR
R
AB
22
(CAR td)
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