The voltage E of a certain thermocouple as a function of the temperature T (in "C) is given by E=2.700T+0.010T2. If the temperature is increasing at the rate of 4 00°C/ min, how fast is the voltage increasing when T= 120°C? The voltage is increasing at a rate of when T= 120°C (Type an integer or decimal rounded to two decimal places as needed.)

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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.