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A heating element using nichrome connected to a 112V supply draws a current of 1.6A initally and after some time it settles to 1.4amp.What is the steady temperature of the heating element,if the room temperature is 30degreeC and average coefficient of resistance is 1.4*10^-4/C.

Resistance at 30^oC , R₁ = 112/1.6 = 70 ohm

Resistance at the higher temperature t ^o_C , R₂ = 112/1.4 = 80 ohm