Figure CQ20.7 shows a slidewire generator with motional emf Eo when the wire at A slides across the top and bottom rails at constant velocity Vo. (a) When the wire reaches B so that the area enclosed by the circuit is doubled, determine the ratio of the new emf to the original emf, E / Eg- (b) If the wire's speed is doubled so that v = 2vo, determine the ratio E/Eo. R A B Figure CQ20.7 జి

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