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The approximate ratio of resistance in forward bias of p-n junction is

$(a)\;10^2:1 \\ (b)\;10^{-1}:1 \\ (c)\;1: 10^{-4} \\ (d)\;1: 10^4 $
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Junction offers little resistance when forward biased.
When electric current pass from p side to n side , and offer large resistance if current is passed from n side to p-side that is reverse biased.
The ratio is $ 1:10^4$
Hence d is the correct answer.
answered Jan 27, 2014 by meena.p
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