A parallel plate capacitor with area o...

A parallel plate capacitor with area of each plate equal to `S` and the separation between them to `d` is put into a stream of conducting liquid with respectivity `rho`. The liquid moves parallel to the plates with a constant velocity `v`. The whoel system is located in a unifrom magentic field of induction `B`, vector `B` being parallel to the plates are interconnected by means of an exteranal resistance `R`. What amount of power is genrated in that resistance? At what value of `R` is the generated power the highest? What is this highest power equla to ?

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A, B, D

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