Question

A 10 v full-scale voltmeter having 100 k-ohm / v sensitivity is used to measure the output of a photovoltaic cell having an internal resistance of 1 m-ohm. the voltmeter reads 5v. the voltage generated by the photovoltaic cell is

Answer 1

Working and dealing with solar photovoltaic (PV) modules daily, we all have certainly and continuously been coming across the most severe types of miserliness.

A miser is one who does not willingly share his wealth with others. Every human has this tendency to a lesser or greater extent. And not only humans: everything in this world has this property, even a PV module!

Every time you try to draw current from it, its terminal voltage drops. The more current you demand from it the lower goes the terminal voltage. In fact: everything – every system, be it electrical or mechanical or even chemical, that can offer anything to the outside world, has this property of miserliness.

Competency with PV requires an understanding of the electrophysical basis and correlations of this miserliness: Ohm’s law, which we will explain you in this article.

Answer 2

$\large \green{ \fcolorbox{gray}{black}{ ☑ \: \textbf{Verified \: answer}}}$

• Photovoltaic cells generate electricity by absorbing sunlight and using that light energy to create an electrical current.
• When light shines on the cell it creates an electric field across the layers causing electricity to flow.
• Photovoltaic Cell are used to produce electricity which powers a water pump, well etc.