A heating element using nichrome connected to a 230 V supply draws an initial current of

Solution:
Voltage supply is given as V =230 V, initial current I1 = 3.2 A.
Initial Resistance is,
R1 = VI1 = 71.9 Ω
At steady state, current is I2 = 2.8 A and the resistance will be
R2 = VI2 = 82.14 Ω
Temperature coefficient of resistance of nichrome, α is 1.710-4  oC-1. And the formula for α is,
α = R2-R1R1T2-T1   ( T1 = 27 0C)
 T2 = 867.5 oC

Final answer:
Steady temperature of the heating element is T2 = 867.5 oC.