Explain the joule's law of heating. How and on what factors does the heat produced in a conductor depends ?
Answers
The heat which is produced due to the flow of current within an electric wire, is expressed in unit of Joules. Now the mathematical representation and explanation of Joule’s law is given in the following manner.
The amount of heat produced in a current conducting wire, is proportional to the square of the amount of current that is flowing through the wire, when the electrical resistance of the wire and the time of current flowing are constant.
The amount of heat produced is proportional to the electrical resistanceof the wire when the current in the wire and the time of current flowing are constant.
The heat generated due to the flow of current is proportional to the time of current flowing, when the electrical resistance and the amount of current is constant