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20 A potential difference of 2 5 V is applied across the faces of a...

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20 A potential difference of 2 5 V is applied across the faces of a germanium crystal plate The face area of the crystal is 1 cm2 and its thickness is 1 0 mm The free electron concentration in germanium is 2 x 1019 m 3 and the electron and holes mobilities are 0 33 m2 V s and 0 17 m2 V s respectively The current across the plate will be 1 0 2 A 2 0 4 A 3 0 6 A 4 0 8 A

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