CBSE Class 12 (Science) Semiconductor Electronics — practice questions
24 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 12 (Science) Semiconductor Electronics in the app →A p-n junction diode is forward biased when:The output of an AND gate is HIGH only when:At absolute zero ($T = 0\,\text{K}$), a pure intrinsic semiconductor behaves like a(n)The barrier (built-in) potential of an unbiased silicon p-n junction at room temperature is approximatelyThe band holding the valence electrons is called the:The band just above the valence band is the:The energy separation between the two bands is called the:Deliberate addition of an impurity to a semiconductor is called:A doped semiconductor is described as:In an intrinsic semiconductor, electrons and holes are:Doping with a pentavalent atom gives which type?Doping with a trivalent atom gives which type?A pentavalent impurity is known as a:A trivalent impurity is known as an:In an n-type semiconductor, the majority carriers are:In a p-type semiconductor, the majority carriers are:One acceptor atom gives how many holes?Conductivity of an intrinsic semiconductor depends on its:A material with a band gap above three electron volts is an:A material with a band gap below three electron volts is a:A material behaves as a metal when the two bands:In an n-type semiconductor, the minority carriers are:A junction diode is described as a device with how many electrodes?Holes exist as vacant levels created in the: