why temperature is kept constant in ohm's law ?
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Answers
Answer:
because of the resistance of any material varies with the change in temperature.
Answer:
The conductor is known and its temperature coefficient of resistance is known, we can use this information to adjust our calculations and apply Ohm's law accurately.
Explanation:
Ohm's law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, provided that the temperature and other physical conditions remain constant.
The reason why temperature is kept constant in Ohm's law is that the resistance of a conductor changes with temperature. If the temperature of a conductor changes, its resistance will also change, which means that the relationship between voltage, current, and resistance will no longer be proportional, and Ohm's law will no longer hold.
To accurately apply Ohm's law, we must ensure that the temperature of the conductor remains constant. This is typically done by using a conductor with a low temperature coefficient of resistance, meaning that its resistance changes only minimally with temperature. Alternatively, if the temperature of the conductor is known and its temperature coefficient of resistance is known, we can use this information to adjust our calculations and apply Ohm's law accurately.
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