Home
Class 12
PHYSICS
Temperature coefficient of resistance of...

Temperature coefficient of resistance of a wire at `0^(@)C` is `0.00125^(@)C^(-1)` . At `25^(@)C` its resistance is `1 Omega ` . The resitance of the wire will be `1.2 Omega ` at

A

225K

B

`190^(@)`

C

`260^(@)C`

D

`185K`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

The temperature coefficient of resistance of a wire is 0.00125 per ""^(@)C . At 300 K, its resistance is 1Omega . The resistance of the wire will be 2Omega at

The temperature coefficient of resistance of a wire is 0.00145^(@)C^(-1) . At 100^(@)C its resistance is 2Omega . At what temperature the resistance of the wire be 3Omega ?

The temperature coefficient of resistance of the material of a wire is 0.00125^(@)C^(-1) . Its resistance at 27^(@)C is 1 Omega . At what temperature will its resistance be 2 Omega ?

The electrical resistance of pure platinum increases linearly with increasing temperature over a small range of temperature . This property is used in a Platinum resistance thermometer. The relation between R_(theta) (Resistance at theta K) and R_(0) (Resistance at theta_(0)K ) is given by R_(theta)=R_(0)[1+a(theta-theta_(0))] , where alpha= temperature coefficient of resistance. Now, if a Platinum resistance thermometer reads 0^(@)C when its resistance is 80Omega and 100^(@)C when its resistance is 90 Omega find the temperature at which its resistance is 86Omega .

The resistance of a wire at 20^(@)C is 20Omega and at 500^(@)C is 60Omega . At which temperature its resistance will be 25Omega ?

A silver wire has a temperature coefficient of resistivity 4 xx 10^(-3) .^@C^(-1) and its resistance at 20^@ C is 10Omega Neglecting any change in dimensions due to the change in temperature , its resistance at 40^@C is

The temperature coefficient of resistance for two material A and B are 0.0031^(@)C^(-1) and 0.0068^(@)C^(-1) respectively .Two resistance R_(1) and R_(2) made from material A and B respectively . Have resistance of 200 Omega and 100 Omega at 0^(@)C . Show as a diagram the colour cube of a carbon resistance that would have a resistance equal to the series combination of R_(1) and R_(2) at a temperature of 100^(@)C (Neglect the ring corresponding to the tolerance of the carbon resistor)

Resistance of tungsten wire at 150^(@)C is 133 Omega . Its resistance temperature coefficient is 0.0045//^(@)C . The resistance of this wire at 500^(@)C will be

The temperature coefficient of resistance of tungsten is 4.5 xx 10^(-3) ""^(@)C^(-1) and that of germanium is - 5 xx 10^(-2)""^(@)C^(-1) . A tungsten wire of resistance 100 Omega is connected in series with a germanium wire of resistance R. The value of R for which the resistance of combination does not change with temperature is .

The resistance of a wire R Omega . The wire is stretched to double its length keeping volume constant. Now, the resistance of the wire will become