In the circuit shown below, let Imax be the maximurm lo current in the circuit, and Imin be the minimum l, in the circuit. Let the total resistance of the potentiometer = 20k). Then, the value of the resistance Ro such the ratio Ima/lmin equals to 10 is DMM Vs Po A Sk) B. 0.55k2 C125kt2 D. 2.22k Next page The maximum and minimum values of Is are 0.5 and 0.1 A. This indicates that the value of the rheostat resistance R is: 40 $2 Is Vs O a. 280 0 O b. 350 n OC. 160 0 Od. 240 0

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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.