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  4. From the graph between current (I) and voltage (V) is shown below. Identify the portion corresponding to negative resistance

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Q. From the graph between current $(I)$ and voltage $(V) $ is shown below. Identify the portion corresponding to negative resistancePhysics Question Image

AIPMTAIPMT 1997Current Electricity

Solution:

For the negative resistance, when we increase the voltage, the current will decrease. Therefore from the graph, we find that the current in $CD$ is decreased when voltage is increased.