A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00°C, the resistance of the carbon resistor is 217.7 Ω. What is the temperature on a spring day when the resistance is 215.1 Ω? Take the temperature coefficient of resistivity for carbon to be α = −5.00×10^−4C^-1

The Temperature on a spring day is 28°C.

The problem above can be solved using the formula below.

⇒ Formula:

⇒ Where:

From the question,

⇒ Given:

⇒ Substitute these values into equation 1

⇒ Solve for T₂

Hence, The Temperature on a spring day is 28°C.

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28 degree C

Explanation:

We are given that

We have to find the temperature on a spring day when resistance is 215.1 ohm.

We know that

Using the formula

Hence, the temperature  on a spring day 28 degree C.

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