Write two application of joules law
Answers
☀️ two application of joule law of heating are :-
1.. Electric heating device
Electric iron, electric heater, electric toaster are some of the appliances that work on the principle of heating effect of current. In these appliances, Nichrome which is an alloy of nickel and chromium is used as the heating element for the following reasons.
1. It has high specific resistance
2. It has high melting point
3. It is not easily oxidized
2.. Fuse wire
Fuse wire is an alloy of lead 37% and tin 63%. It is connected in series in an electric circuit. It has high resistance and low melting point. When large current flows through a circuit due to short circuiting, the fuse wire melts due to heating and hence the circuit becomes open. Therefore, the electric appliances are saved from damage.
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Answer:
1.The heating effect of electric current has many practical applications. It is used in many domestic appliances such as an electric heater, an electric iron, a geyser, lectric oven etc.
2.Electric fuse. An electric fuse is used as a safety device for the protection of electric circuits and appliances due to short-circuiting or overloading of the electric circuits. The electric fuse is a piece of wire having a very low melting point and high resistance.