write joules law of heating
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The heat that is generated because of the current flow in an electric wire is described in Joules. The mathematical expression of Joule’s law is as explained below.
The joule’s first law shows the relationship between heat produced by a flowing electric current through a conductor.
Q = I2 R T
Where,
Q indicates amount of heat,
I shows electric current
R is the amount of electric resistance in conductor
T denotes time
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Answer: Joule's law of heating states that , "The heat produced in a resistor is directly proportional to (1) square of current (I^2) (2) resistance of the resistor (R) and (3) time for which the current flows through the resistor .
H = I^2Rt joules
From ohm's law , we get H = Vlt = V^2/R joules
Explanation:
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