heating-eJennentualng.n,chrome,connec fmlAmich orme Connecuch se4s aft

1.	heating-eJennentualng.n,chrome,connec fmlAmich orme Connecuch se4s after a fu secondoften intence ofm/cha ome averaged over fhe
Answer» Intial resistance of nichrome wire R1 = 230 / 3.2 = 71.875 ohm final resistance R2 = 82.142857 ohm Change in resistance = 82.142857 - 71.875 = 10.267 ohm We know that change in resistance is directly proportional to the initial resistance and on the change in temperature Let's denote the change by dR, the temperature coefficient A = 1.7 x 10^-4 dR = R1 x A x dT dT = dR / A x R1 = 10.267 / 1.7 x 10^-4 x 71.875 dt = 840 C Final steady temperature of the wire 840 + 27 = 867 C

heating-eJennentualng.n,chrome,connec fmlAmich orme Connecuch se4s after a fu secondoften intence ofm/cha ome averaged over fhe

Answer»

Intial resistance of nichrome wire R1 = 230 / 3.2 = 71.875 ohm

final resistance R2 = 82.142857 ohm

Change in resistance = 82.142857 - 71.875 = 10.267 ohm

We know that change in resistance is directly proportional to the initial resistance and on the change in temperature

Let's denote the change by dR, the temperature coefficient A = 1.7 x 10^-4

dR = R1 x A x dT

dT = dR / A x R1 = 10.267 / 1.7 x 10^-4 x 71.875

dt = 840 C

Final steady temperature of the wire

840 + 27 = 867 C