An Electric Toaster Uses Nichrome For Its Heating Element. When A Negligibly Small Current Passes Through It, Its Resistance At Room Temperature (27.0 °C) Is Found To Be 75.3 ?.
An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it, its resistance at room temperature (27.0 °C) is found to be 75.3 Ω. When the toaster is connected to a 230 V supply, the current settles, after a few seconds, to a steady value of 2.68 A. What is the steady temperature of the nichrome element? The temperature coefficient of resistance of nichrome averaged over the temperature range involved, is 1.70 × 10–4 °C–1.