Graph showing the variation of current versus voltage for a material GaAs is shown in figure. Identify the region of (i) negative resistance (ii) where Ohm's law is obeyed.
Text Solution
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(i) DE is the region of negative resistance because the slope of curve in this region is negative. (ii) BC is the region where Ohm's law is obeyed because in this part the current varies linearly with the voltage.
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