14. P2.93. A battery can be modeled by a voltage source Vt[&V_{t}&] in series with a resistance Rt.[&R_{t}.&] Assuming that the load resistance is selected to maximize the power delivered, what percentage of the power taken from the voltage source Vt[&V_{t}&] is actually delivered to the load? Suppose that RL=9Rt;[&R_{L}|=|9R_{t};&] what percentage of the power taken from Vt[&V_{t}&] is delivered to the load? Usually, we want to design battery- operated systems so that nearly all of the energy stored in the battery is delivered to the load. Should we design for maximum power transfer?

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Solar Cell

A solar cell, or photovoltaic cell, is a device that converts light into electricity directly through a photovoltaic effect, i.e., a physical and chemical event. It is a type of electromagnetic cell, defined as being used for its electrical properties, current, voltage, or resistance, which vary when exposed to light. Everyday cellular gadgets are usually the building blocks of photovoltaic modules, collectively known as solar panels. Single junction silicon solar cell can generate an open circuit of about 0.5 to 0.6 volts.