Question

What is the resistance of a heating coil on an electric stove that has a current of 25 A flowing through it and uses 0.24 kV? Round to two significant digits (one decimal). *

Answer 1

Answer:

I hope it's helpfull

Explanation:

V=230 volts

Initial current, I

1 =3.2 A

R=V/I

1 =71.9Ω

steady state current,

I 2 =2.8 A

R 2 =230/2.8=82.14Ω

α=1.7×10

−4,T 1 =27 o Ccoefficient of resistanceα= R 1

(T 2−T 1 )R 2 −R 1⇒T 2 =867.5 o C