1.

When a p-type semiconductor is brought into a close contact with n-type semiconductor, we get a p-n junction with a barrier potential 0.4V and the width ofdepletion region is 4.0 xx 10^(-7)m. this p-n junction is forwaed biased with a battery of voltage 3V adn negligible internal resistance, in series with a resistance of resistance R, ideal milliammeter and key K as shown in Fig. Wattage of diode is

Answer»

0.060 W
0.052 W
0.008 W
0.048 W

Solution :Wattage of DIODE = voltage DROP ACROSS diode xx CURRENT
`=0.4xx20xx10^(-3)=0.008 W`


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