Which of the following is not a property of semiconductors used in electronic devices?a) They excite electronsb) They don’t emit lightc) They have high thermal conductivityd) They have variable electrical conductivity

Choose the incorrect statement from the following:Semiconductors exhibit electrical properties between conductors and insulators.Electrical resistivity decreases with addition of impurities in semiconductors. Electrical conductivity decreases in semiconductors with increasing temperature. Examples of semiconductors include Germanium and Silicon.

Dopingthe addition of small amounts of impuritiesdrastically affects its propertiessome materials form an excess of electrons andproduce an n-type semiconductorsome materials form an excess of holes andproduce a p-type semiconductorboth n-type and p-type materials have muchgreater conductivity than pure semiconductorsthis is extrinsic conduction

Which statement is true about Semiconductors?Question 13AnswerA.They have a higher resistance than insulatorsB.They are always used as insulators in electronic devicesC.Their electrical conductivity between that of conductors and insulatorsD.They only have one energy band

A semiconductor has generally ……………… valence electrons.Select one:a.2b. 6c.3d.4

In an Intrinsic semiconductor, current conduction is due to ……..Select one:a.Holes and electronsb.only holesc.None of the answersd.Only electrons