A photovoltaic cell is supplying energy to an external circuit. The photovoltaic cell can be modelled...
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A photovoltaic cell is supplying energy to an external circuit. The photovoltaic cell can be modelled as a practical electrical cell with internal resistance. The intensity of solar radiation incident on the photovoltaic cell at a particular time is at a maximum for the place where the cell is positioned. The following data are available for this particular time: Operating current = 0.90 A Output potential difference to external circuit = 14.5V (a) Output emf of photovoltaic cell = 21.0V Area of panel 350 mm x 450 mm = Explain why the output potential difference to the external circuit and the output emf of the photovoltaic cell are different. (b) Calculate the internal resistance of the photovoltaic cell for the maximum intensity condition using the model for the cell. (c) (d) The maximum intensity of sunlight incident on the photovoltaic cell at the place on the Earth's surface is 680 W m A measure of the efficiency of a photovoltaic cell is the ratio energy available every second to the external circuit energy arriving every second at the photovoltaic cell surface" Determine the efficiency of this photovoltaic cell when the intensity incident upon it is at a maximum. State two reasons why future energy demands will be increasingly reliant on sources such as photovoltaic cells. A photovoltaic cell is supplying energy to an external circuit. The photovoltaic cell can be modelled as a practical electrical cell with internal resistance. The intensity of solar radiation incident on the photovoltaic cell at a particular time is at a maximum for the place where the cell is positioned. The following data are available for this particular time: Operating current = 0.90 A Output potential difference to external circuit = 14.5V (a) Output emf of photovoltaic cell = 21.0V Area of panel 350 mm x 450 mm = Explain why the output potential difference to the external circuit and the output emf of the photovoltaic cell are different. (b) Calculate the internal resistance of the photovoltaic cell for the maximum intensity condition using the model for the cell. (c) (d) The maximum intensity of sunlight incident on the photovoltaic cell at the place on the Earth's surface is 680 W m A measure of the efficiency of a photovoltaic cell is the ratio energy available every second to the external circuit energy arriving every second at the photovoltaic cell surface" Determine the efficiency of this photovoltaic cell when the intensity incident upon it is at a maximum. State two reasons why future energy demands will be increasingly reliant on sources such as photovoltaic cells.
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Related Book For
College Physics
ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett
Posted Date:
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