At room temperature `(27.0^(@)C)` the resistance of a heating element is `100 Omega`. What is the temperature of the element if the resistance is found to be `117 Omega`, given that the temperature coefficeint of the material of the resistor is `1.70 xx 10^(-4) .^(@)C^(-1)`

Resistance of a metal wire of length 1 m is 26 Omega at 20^@ C. If the diameter of the wire is 0.3 mm, what will be the resistivity of the metal at that temperature? Using Table 12.2, predict the material of the wire.

A wire has resistance of 3.1 Omega at 30 ^@ C and 4.5 Omega at 100 ^@ C . The temperature coefficient of resistance of the wire is

A heating element using nichrome connected to a 230V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value of 2.8A. What is the steady temperture of the heating element if the heating the room temperature is 27.0^(@)C ? Temperature coefficient of resistance of nichrome averaged over the temperature range involved is 1.70 xx 10^(-4) .^(@)C^(-1) .

The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at 10°c and 100°c. temperature at which the resistance is 3.26 ohm is

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 Omega . 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 xx 10^(-4) .^(@)C^(-1) .

The resistance of a bulb filament is 100Omega at a temperature of 100^(0)C . If its temperature coefficient of resistance be 0.005 per ""^(0)C , its resistance will become 200Omega at a temperature of