A. Last Christmas season, Ronnie uses the equivalent of 20 strings of 100 mini-bulbs to light the inside and outside of his home. Each 100-bulb string of lights is rated at 50 Watts. The average daily usage of the strings is 6 hours. The lights are used for approximately 30 days during the holiday season. (a) Determine the resistance of each string of lights. Each is powered by 220-volt outlet. (b) Determine the energy consumed (in kW-hr) by the lights over the course of 30 days. (c) If Ronnie pays 15 pesos/kW-hr for electrical energy, then what is the total cost of Christmas lighting for a single season?

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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.