The life of a battery is calculated by the life formula: Life of battery (in hours) = ampere-hour rating (AR) Drain Current (A) What is the current drain of an Energizer D cell with ampere-hour rating of 12 Ah after 3 hours of use?

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A: Disclaimer Since you have asked multiple questions, we will solve the first question ( i.e.,…

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A:

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Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.