Joules Law Of Electric Heating
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Joule’s Law of Electric Heating
Form expression (i) the energy expended or heat generated in joules when a current of I amperes flows through a resistance of R ohms for t seconds is given
The above expression is known as Joule’s law, which states that the amount of heat produced in an electric circuit is
(i) Proportional to the square of the current i.e. H ∝ I2
(ii) Proportional to the resistance of the circuit H ∝ R
(iii) Proportional to the time for which the current flows through the circuit i.e. H ∝ t
Heat produced in K cals, H = I2Rt
I2Rt [ 1 k.cal =4,180 J 4,200 J]
4,180 4,200
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The above expression is known as Joule’s law, which states that the amount of heat produced in an electric circuit is
(i) Proportional to the square of the current i.e. H ∝ I2
(ii) Proportional to the resistance of the circuit H ∝ R
(iii) Proportional to the time for which the current flows through the circuit i.e. H ∝ t
Heat produced in K cals, H = I2Rt
I2Rt [ 1 k.cal =4,180 J 4,200 J]4,180 4,200
more help in Joule’s Law of Electric Heating click the button below to submit your homework assignment