Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion

N P N - means; - + -, Electron-Hole-Electron; Emitter-Base-Collector.

P N P - means; + - +, Hole-Electron-Hole, Emitter-Base-Collector.

Yeah, The given answer is wrong because in NPN transistor base is p and in p base, the holes are majority carrier.

No, it's wrong.

Because they are not intrinsic semiconductor so hey will have some potential to move but not exceeding the barrier potential.

@Esk Kishore.

Its hole is majority carriers in the base.

Electrons and holes are charged particles. They will become carriers when the device is biased. So the answer is (a) electrons.

When the device is biased charge particles become charged carriers till then they remain charged particles.

How is it possible?

Because three is no any condition of biasing in question, so the answer will be holes.

In an NPN transistor, majority charge carriers in Base is Hole.

In an npn transistor, majority charge carriers in base is holes and minority charge carriers are electrons.

In an NPN transistor, when positive bias is applied to the base emitter junction, the equilibrium is disturbed between the thermally generated carriers and the repelling electric field of the n-doped emitter depletion region.

This allows thermally excited electrons to inject from the emitter into the base region. These electrons diffuse through the base from the region of high concentration near the emitter towards the region of low concentration near the collector.

The electrons in the base are called minority carriers because the base is doped p-type, which makes holes the majority carrier in the base.

Answer is holes. As in p type holes is majority.