MHT CET Physics question

Not in JEE Advanced syllabus

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

(A)There will not be a steady current in the circuitCorrect
(B)There will be a steady current from n-side to p-side
(C)There will be a steady current from p-side to n-side
(D)There will not be a current depending upon the resistance of the connecting wire

Answer: (A)

Solution

With no external source, the junction is in equilibrium: the diffusion current is cancelled by the drift current and no net steady current flows

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Question ID VK-085441