Define joules law of heating,its cause and derive relation for it.
Answers
★᭄ꦿ᭄Answer★᭄ꦿ᭄
H ∝ R. The heating is caused by the interactions between the electrons and the atomic ions of the conductor. A voltage difference between two points of the conductor creates an electric field which causes the electrons to accelerate in the direction of the field, thus giving them kinetic energy.
Answer:
Joule's law:-
When an electric current passes through a conductor, heat H is produced, which is directly proportional to the resistance R of the conductor, the time t for which the current flows, and to the square of the magnitude of current I.
Cause :-
H ∝ R. The heating is caused by the interactions between the electrons and the atomic ions of the conductor. A voltage difference between two points of the conductor creates an electric field which causes the electrons to accelerate in the direction of the field, thus giving them kinetic energy.
Derived :-
The amount of heat produced is proportional to the electrical resistance of the wire when the current in the circuit and the time of current flow is constant. Heat generated due to the flow of current is proportional to the time of current flow, when the resistance and amount of current flow is constant.04-Jul-2016