Question

Which of the following electronic component is used for converting Alternating Current (AC) to Direct current (DC)?
1) p-n-p Transistor
2) n-p-n Transistor
3) p-n Junction Diode
4) Operational Amplifier

Answer 1

4 one is right I think
If it is right
So please mark me as brainilist

Answer 2

p-n junction diode.....