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If the Two Ends of A P-n Junction Are Joined by a Wire, - Physics

MCQ

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

Options

  • there will not be a steady current in the circuit

  • there will be a steady current from the n-side to the p-side

  •  there will a steady current from the p-side to the n-side

  • there may or may not be a current depending upon the resistance of the connecting wire

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Solution

there will not be a steady current in the circuit    

In a p‒n junction, current flows only if it is connected to the battery. If two ends of a p‒njunction are joined by a wire, then there will be diffusion and drift currents in the circuit and they will cancel each other. Hence, no current will flow in the circuit.

Concept: p-n Junction
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 23 Semiconductors and Semiconductor Devices
MCQ | Q 7 | Page 417
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