In p-n-p transistor the current I_E has two components viz. I_EP due to injection of holes from p-region to n-region and I_E due to injection of electrons from n-region to p-region. Then

I_Ep and I_En are almost equal

I_Ep >> I_En

I_En >> I_Ep

either (a) or (c)

Correct answer is B

Emitter is p-type in p-n-p transistor.

Therefore holes are majority carriers.

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In p-n-p transistor the current IE has two components viz. IEP due to injection of holes from p-region to n-region and IE due to injection of electrons from n-region to p-region. Then