1.

As per the Joule's equation of electrical heating, The heat produced in a register 1.H= ______ Joule. 2. Derive above formula using Ohm's law

Answer»

Solution :1.H = `I^2Rt` JOULE
2. DERIVATION of the formula : If 'I' is the current flowing continuously through the circuit, the heat produced in the resistor in time't' will be:
H= p x t
`:.` H = V x I x t(`because` P = V x I)
`THEREFORE` H = I x R x I x t (By Ohm's law , V=IR)
This equation is CALLED as Joule's law of heating.


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