Question

The resistance of wire in a heater at room temperature is 65 Q. When the heater is
connected to a 220 V supply the current settles after a few seconds to 2.8 A. What is the
steady temperature of the wire. (Temperature coefficient of resistance a = 1.70 x 10*c.
room temp 30°C)
(a) 955 °C (b) 1055 °C
(c) 1155 °C
(d) 1258 °C​

Answer 1

Answer:

d is the right answer ....