a) What do you understand by energy gap and how it varies in conductors, semiconductors and insulators? What is an intrinsic semiconductor? How is its electrical conductivity changes with temperature which is at absolute zero? What is meant by doping? How is Ge(Germanium) made n –type semiconductor? Explain with the help diagram. Compare the resistance of a p-n junction diode connected in forward bias to its resistance when connected in reverse bias? Use forward and reverse bias circuits to explain? How it can be used in electrical circuits

a) What do you understand by energy gap and how it varies in conductors, semiconductors and insulators? What is an intrinsic semiconductor? How is its electrical conductivity changes with temperature which is at absolute zero? What is meant by doping? How is Ge(Germanium) made n –type semiconductor? Explain with the help diagram. Compare the resistance of a p-n junction diode connected in forward bias to its resistance when connected in reverse bias? Use forward and reverse bias circuits to explain? How it can be used in electrical circuits