The temperature coefficient of resistance is expressed in:
Correct answer: B. °C-1
- A. °C
- B. °C-1
- C. m0C-1
- D. None of these
Explanation
Correct option is B.The temperature coefficient of resistance (TCR) measures the change in resistance expressed in degrees Celsius. Thus, the temperature unit is °C-1.
Last updated
About Temperature Coefficient of Resistivity
Temperature coefficient of resistivity describes how a material's resistivity changes for each degree change in temperature. Questions use the relation between resistance, temperature and the coefficient, especially for metallic conductors with positive values and semiconductors with negative values. Resistivity is a material property, unlike resistance, which also depends on dimensions.
Practise Current Electricity
1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A platinum wire has resistance of 10ohm at 0c° and 20ohm at 273c°. What is the value of temperature coefficient of resistance of platinum?
A wire has resistance 100 ohm at 0 C and 200 Ohm at 100 C. What is its temperature coefficient in K-1?
As the temperature of a metal conductor rises, its resistance
If a substance has negative temperature coefficient its resistance
Resistance of a wire on increasing its temperature will_________________?