Why is the $I-V$ characteristic of a solar cell drawn in the fourth quadrant of the coordinate system?

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(N/A) solar cell is a device that converts light energy into electrical energy. It acts as a source of power rather than a consumer of power.
In the $I-V$ characteristic graph,the $V$-axis represents the voltage across the device,and the $I$-axis represents the current flowing through it.
For a solar cell,the generated current $(I)$ flows out of the device,which is considered negative by convention in the circuit,while the voltage $(V)$ across the terminals is positive.
Since the current is negative $(I < 0)$ and the voltage is positive $(V > 0)$,the operating point lies in the fourth quadrant of the Cartesian coordinate system.
This indicates that the solar cell is delivering power to an external load.

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