ET=12V  R1= 270 OHMS  R2=510 OHMS  R3= 47 OHMS  R4= 330 OHMS Assume that an ammeter indicates a total circuit current of 15mA.  A voltmeter indicates the following voltage drops across each resistor: E1= 12V  E2= 0V  E3=7V   E4=5V\What is the most likely problem with this circuit?

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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.