Electronic Devices and Circuits
How many free electrons does a p type semiconductor has?

Only those produced by doping
Only those produced by thermal energy
Any of the above
Those produced by doping as well as thermal energy

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Electronic Devices and Circuits
Assertion (A): In p-n-p transistor collector current is termed negative.Reason (R): In p-n-p transistor holes are majority carriers.

A is true but R is false
Both A and R are true but R is not a correct explanation of A
A is false but R is true
Both A and R are true and R is correct explanation of A

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