state joules law of heating? write any two applications of heating effect of electric current
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Explanation:
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. Since the resistance of the filament in the bulb is high, the quantity of heat produced is also high.
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Joule's law of heating states that, when a current 'i ' passes through a conductor of resistance 'r' for time 't' then the heat developed in the conductor is equal to the product of the square of the current, the resistance and time.
common applications of heating effects of electric current are electrical laundry iron,
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