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 coefficient of the material of the resistor is `1.70 xx 10 ^(-4)"" ^(@)C^(-1).`

At room temperature (28.0^(@) C) the resistance of a heating element is 100 Omega . What ic. the temperature of the element if the resistance is found to be 117 Omega , given that the temperature coefficient of the material of the resistor is 1.70 xx 10^(-4)""^(@) C^(-1) .

At what temperature will the resistannce of a copper wire become three times its value at 0^(@)C (Temperature coefficient of resistance for copper =4xx10^(-3)"per".^(@)C :-

An electric toaster uses nichrome for its heating element. When a negllgibly small current pases 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 2.68A. 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).

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) .

Resistance of a metal wire of length 1m is 26 Omega" at " 20^@C .If the diameter of the wire is 0.3mm, what will be the resistively fo the metal at that temperature ? Using Table 2 (on page 116), predict the material of the wire.

Resistance of platinum wire in one platinum resistance thermometer at ice point and at steam point are respectively 10 Omega and 10.78 Omega . When this thermometer is kept in one heat bath, its resistance is found to be 10.123 Omega . Find temperature of this heat bath in degree Fahrenheit (""^(@)F).

Two equal resistance at 0^(@)C with temperature coefficient of resistance alpha_(1) and alpha_(2) joined in series act as a single resistance in a circuit the temperature coefficient of their single resistance will be

A steel tape Im long is correctly calibrated for a temperature of 27.0 ^(@) C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0^(@) C .What is the actual length of the steel rod on that day? What is the length of the same steel rod on a day when the temperature is 27.0^(@) C ? Coefficient of linear expansion of steel = 1.20 xx 10^(-5) K^(-1) .

A steel tape 1 m long is correctly calibrated for a temperature of 27.0^(@)C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0^(@)C . What is the actual length of the steel rod on that day ? What is the length of the same steel rod on a day when the temperature is 27.0^(@)C ? Coefficient of linear expansion of steel =1.20xx10^(-5)K^(-1) .

Maximum 1 A current can pass through a bulb haVing resistance 100 Omega . What will be the power of this bulb?