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The resistance of a device dropped drastically when the polarity of the connection changed. The device could be a

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Important Questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

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The circuit shown below contains two ideal diodes, each with a forward resistance of 50 Ω. If the battery voltage is 6 V, the current through the 100 Ω resistance (in amperes) is:
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In a reverse biased diode when the applied voltage changes by 1 V, the current is found to change by 0.5 μA. The reverse bias resistance of the diode is
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In a P-N junction diode, the current in the reverse-biased state is due to
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When a  junction diode is reverse biased, the flow of current across the junction is mainly due to_____.
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The given circuit has two ideal diodes connected as shown in the figure. The current flowing through the resistance R1 will be

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When a semiconducting device is connected in series with a battery and a resistance, a current is found to flow in the circuit. If, however, the polarity of the battery is reversed, practically no current flows in the circuit. The device may be