Question

state joule's law of heating . list two special characteristics of a heating element wire .

Answer 1

The joule's first law shows the relationship between heat produced by a flowing electric current through a conductor. The amount of generated heat is proportional to wire's electrical resistance when the current in the circuit and the flow of current is not changed.


High melting point and high resistance are two special characteristics!

Answer 2

Joules law of heating:

Ans-: According to Joules law of heating, we came to know that the amount of heat produced in a electrical wire due to electrical flow ,is directly proportional to the time of the electrical flow when the resistance of that wire and the amount of electricity flow are constant.

Special characteristics of heating element wire:

1)the resistances of these kind of wires are very high

2)the melting points of these kind of wires are also very high