Solved: PHYSICS Question for NEET

NEET PHYSICSMedium

The given graph represents the $V$ - $I$ characteristics of a semiconductor device. Which of the following statements is correct?

It is a $V$ - $I$ characteristic of a solar cell where the point $A$ represents open-circuit voltage and the point $B$ represents short-circuit current.

It is for a solar cell and points $A$ and $B$ represents open-circuit voltage and current respectively.

It is for a photodiode and points $A$ and $B$ represents open-circuit voltage and current respectively.

It is for an LED and points $A$ and $B$ represents open-circuit voltage and short-circuit current respectively.

Step-by-Step Solution

Identify the Device: The $V$ - $I$ characteristic curve of a solar cell is drawn in the fourth quadrant because a solar cell supplies current to the load instead of drawing current from a battery.
Identify the Points: The point where the curve intersects the voltage axis ( $V$ -axis) indicates the voltage when no external current is drawn ( $I=0$ ). This is called the open-circuit voltage ( $V_{oc}$ ), corresponding to point $A$ . The point where the curve intersects the current axis ( $I$ -axis) indicates the maximum current that can flow when the terminals are shorted together ( $V=0$ ). This is called the short-circuit current ( $I_{sc}$ ), corresponding to point $B$ .
Conclusion: The given graph represents a solar cell, with $A$ being the open-circuit voltage and $B$ being the short-circuit current.

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