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Answer» the POTENTIAL is the same everywhere. the p-side is at a higher potential than then-side. an electric field exists at the junction directed from then-type side top-type side. an electric field exists at the junction directed from the p-type side to n-type side. Solution :In a p-n junction in its unbiased condition due to DIFFUSION and DRIFT CURRENTS potential of n-side of junction is higher than that of p-side and CONSEQUENTLY an electric field exists at the junction directed from then-side top-side.
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