Question

Write mathematical expression for joules law of heating effect of current.Name one device which works on this principle?

Answer 1

Joule’s Law

• We know that the heating impact of electric current when it travels in a circuit is because of collision among electrons of wire. Specifically, what is the amount of heat generated during flow of current through a wire and what are the parameters and conditions it is based upon. To answer all these questions, Joule gave a formula that describes this phenomenon precisely, and called as Joule’s Law.
• Joule’s Law of Heating
• 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.
• Joule’s first law
• 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

ELECTRIC HEATER IS THE DEVICE

HOPE IT HELPS!

Answer 2

Joules law of heating effect of current

Explanation:

The Joules law of heating effect of current states that the produced heat in i conductor is given by the following relation as :

$H=I^2Rt$

Here,

I is the current flowing through the circuit

R is the resistance

t is the time taken

The examples of device that work in same principle are Heaters, Geyser etc.

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Joules law of heating effect of current

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