Question

What is main difference between npn and pnp transistor what is forward bias and reverse bias

Answer 1

Explanation:

Npn transistors turn on when current flow through the base of the transistors while pnp does not have current in it base.

Forward bias decreases the resistance of the diode where as revere bias increases it.

Answer 2

$\sf{\underline{\overline{\pink{1. Question :}}}}$

What is main difference between NPN and PNP transistor?

$\sf{\underline{\overline{\pink{1. Answer :}}}}$

• In an NPN transistor, a positive voltage is given to the collector terminal to produce a current flow from the collector to the emitter. In a PNP transistor, a positive voltage is given to the emitter terminal to produce current flow from the emitter to collector.

• PNP switches On by a low signal whereas NPN switches ON by a high signal.

• In PNP transistor, the P represents the polarity of the emitter terminal and N represents the polarity of the base terminal.

$\sf{\underline{\overline{\purple{2. Question :}}}}$

What is forward bias and reverse bias?

$\sf{\underline{\overline{\purple{2. Answer :}}}}$

✦ ғᴏʀᴡᴀʀᴅ ʙɪᴀs :

• Forward biasing means putting a voltage across a diode that allows current to flow easily.

✦ ʀᴇᴠᴇʀsᴇ ʙɪᴀs :

• Reverse biasing means putting a voltage across a diode in the opposite direction.