Two batteries A and B are connected in parallel; to supply a current of 160 amperes to a load resistor RL. The open-circuit terminal voltage of battery A is 123 volts and its internal resistance is 0.12 ohm. If the internal resistance of a battery B is 0.15 ohm and it delivers 90 amperes, calculate (a) the open-circuit terminal EMF of a battery B; (b) the total power taken by the load resistor RL.

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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.