Question

If the two ends p and n of a p-n diode junction are joined by a wire

Answer 1

Answer:There will not be a steady current  in the circuit

Explanation:

Answer 2

Explanation:

If the two ends p and n of a p-n diode junction are joined by a wire, then the end of the p side become -ve potential and n side end become +ve potential

Let us consider there will be current (I≠0) flowing through the two ends of a P-N junction joined by a wire. This should generate heat at metal ohmic contacts (the metal used to connect p-n junction and the wire). This heat must be supplied by the p-n junction since there is no other external excitation applied. The p-n junction, therefore, would have to cool off. Clearly, under thermal equilibrium the simultaneous heating of metal ohmic contacts and cooling of the p-n junction is impossible and we conclude that I꞊0.

Therefore no steady current pass through it

Hope you understand

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