A battery of unknown e.m.f. is connected across resistances as shown in Fig. 2.26. The voltage drop across the 8 resistor is 20 V. What will be the current reading in the ammeter? What is the e.m.f. of the battery?

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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.