Question

In a p-n junction diode, not connected to any circuit

• A. The potential is the same everywhere
• B. The p-type side is at a higher potential than the n-type side
• C. There is an electric field at the junction directed from the n-type side to the p-type side
• D. There is an electric field at the junction directed from the p-type side to the n-type side

Answer 1

The correct option is C There is an electric field at the junction directed from the n-type side to the p-type side

In pn function diode p side of diode (+ve side) attract $-ve$ charge and due to induct ion opposite charge $+ve$ charge appraises on n side which produce potential barrierand we know that charge separation produce electric fields from inside to p side of diode.