Answer :
To calculate the efficiency of solar panels, convert the dimensions to meters, determine the area, and then divide the power output by the product of the insolation and the panel's area. An example panel with dimensions of 0.8 m by 1.5 m and an efficiency of 18% delivers 216 W of power in full sun.
The question involves calculating the efficiency of solar panels A and B based on their power output and area under standard test conditions. First, we convert the dimensions of the solar panels from inches to meters to find the area in square meters (m2). Then, using the power output of 275 W and the area of each panel, we can determine efficiency by dividing the power output by the product of the insolation value (1 kW/m2 or 1000 W/m2) and the area of the panel. Efficiency is usually expressed as a percentage.
To illustrate with an example similar to the question, if a PV panel measuring about 0.8 m by 1.5 m is known to be 18% efficient, it would deliver a power output of 0.8 m * 1.5 m * 1000 W/m2 * 0.18 which equals 216 W under full sun (1,000 W/m2 incident).
