what is Joule heating effect ? define resistivity ? and its SI unit
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If the current flows through a wire or conductor then the wire get heat up this effect of current is known as heating effect of current.
According to Joules law of heating the heat produced is directly proportional to :-
Time
Resistance of the wire
The square of the current
Electrical resistivity is a physical attriibute of a material that defines how much it opposes the flow of electric current through itself.
The SI unit of electrical resistivity is Seimens Per Meter.
Hope it helps you !!!
If the current flows through a wire or conductor then the wire get heat up this effect of current is known as heating effect of current.
According to Joules law of heating the heat produced is directly proportional to :-
Time
Resistance of the wire
The square of the current
Electrical resistivity is a physical attriibute of a material that defines how much it opposes the flow of electric current through itself.
The SI unit of electrical resistivity is Seimens Per Meter.
Hope it helps you !!!
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current is flowing through a wire or a conductor and it gets heated then it is a known as joules law of heating effect and resistivity is defined as the resistance of a conductor of unit length and unit area of cross section SI unit is ohm metre the resistivity of a material does not depend on its length of the thickness of depends on the nature of the substance and the temperature it is a characteristic property of a material of the conductor and where is only if the temperature changes
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