Heating Effect of Current | Prof. Azhar Iqbal

The heating effect of current, also known as Joule heating or resistive heating, refers to the process by which the energy of an electric current is converted into heat as it flows through a conductor. This phenomenon occurs due to the collisions between the flowing electrons and the atoms of the conductor, which causes the kinetic energy of the electrons to be transferred to the atoms, resulting in an increase in temperature. The amount of heat generated is proportional to the square of the current, the resistance of the conductor, and the time for which the current flows, as described by the formula
𝐻
=
𝐼
2
𝑅
𝑡
where
𝐻
H is the heat energy,
𝐼
I is the current,
𝑅
R is the resistance, and
𝑡
t is the time.
Joule heating has practical applications in various electrical devices and systems, such as electric heaters, toasters, and incandescent light bulbs, where the generated heat is the desired outcome. However, it can also be a drawback in electrical circuits and components, such as resistors, transformers, and power lines, where excessive heat can cause damage, reduce efficiency, and lead to energy losses. Proper management of Joule heating is essential in the design and operation of electrical and electronic systems to ensure safety, reliability, and performance.

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Amazing sir❤❤

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❤

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Outstanding sir g❤👏🏻👏🏻👏🏻

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sir azhar kuch samjhain or samjh na aye asa ho hi nahi sakta. Always stay blessed