How pinched resistor can give resistance in order of mega-ohm in a reasonably small area?

How pinched resistor can give resistance in order of mega-ohm in a reasonably small area? Correct Answer By reducing conduction path

In pinched resistor structure, one of the diode conducts in reverse direction and only a small reverse saturation current can flow through n-type material. By doing so, the effective cross-sectional area of the conduction path will be reduced and resistance between two contact lead increases.
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