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A cell of emf 4.5V is connected to a junction diode whose barrier potential is 0.7V. If the external resistance in the circuit is , the current in the circuit is
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Correct option is A
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In a pn junction diode, the thickness of depletion layer is 2 x 10-6m and barrier potential is 0.3v. The Intensity of the electric field at the junction is —
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